Mellanox system drivers backport to kernel 4.9 (sonic-net#1)

* Mellanox system drivers backport to kernel 4.9

This series of patches introduces support for Mellanox systems.
Most of the patches is a backporting from the kernels 4.10 � 4.14
for Mellanox system drivers that have been applied upstream and
a few patches contain current Mellanox upstream work � patches
which are in review process for acceptances for kernels 4.16 � 4.17.
This series introduces Mellanox i2c controller, mux, platform,
hotplug, led, asic drivers, TI voltage controller driver and the
extension of Mellanox kernel config.

In series file all the patches are listed and all old patches, relevant
for old 3.16 kernel are commented out.

Signed-off-by: Vadim Pasternak <vadimp@melanox.com>

* Mellanox system drivers backport to kernel 4.9

This series of patches introduces support for Mellanox systems.
Most of the patches is a backporting from the kernels 4.10 - 4.14
for Mellanox system drivers that have been applied upstream and
a few patches contain current Mellanox upstream work patches
which are in review process for acceptances for kernels 4.16 - 4.17.
This series introduces Mellanox i2c controller, mux, platform,
hotplug, led, asic drivers, TI voltage controller driver and the
extension of Mellanox kernel config.

The patchset includes the bellow commits. And additional we have a code
from two work in progress patchsets, which are supposed to be available in
4.17, in review in:
http://git.infradead.org/users/dvhart/linux-platform-drivers-x86.git
http://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds.git
This is to make Mellanox drivers architecture independent and also extend
the supported system types, since we have a number of new systems).

commit ae3923a284cc696311294022e9b1a49058f07387
Author: Bhumika Goyal <bhumirks@gmail.com>
Date:   Mon Aug 21 17:42:04 2017 +0530
    i2c: busses: make i2c_adapter_quirks const

commit 26b1083b4545ec08a7dcfe759323a2e142d60d75
Author: Wolfram Sang <wsa@the-dreams.de>
Date:   Mon Aug 14 10:23:26 2017 +0200
    i2c: mux: mlxcpld: move header file out of I2C realm

commit 1da87267006246137a96682404bc0716a10c85a7
Author: Wei Yongjun <weiyongjun1@huawei.com>
Date:   Thu Jan 12 14:29:04 2017 +0000
    i2c: mux: mlxcpld: remove unused including <linux/version.h>

commit 649ac63a9ae5e08b7123f2fa98c2bf42f033bdb9
Author: Peter Rosin <peda@axentia.se>
Date:   Sat Dec 17 21:29:11 2016 +0100
    i2c: mux: mlxcpld: fix i2c mux selection caching

commit c02b7bf532f7e46f1f9a0e9c3c27ca3f6f134e8d
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Thu Nov 10 21:26:23 2016 +0000
    i2c: mux: mellanox: add driver

commit dca897e28f364724e42f65cf0262fa367512498d
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Thu Nov 3 19:17:19 2016 +0000
    leds: verify vendor and change license in mlxcpld driver

commit be4fdf99fa4dc95aa01144b207caf2cc9fa074d8
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Thu Sep 8 07:25:53 2016 +0000
    leds: add driver for Mellanox systems LEDs

commit d70eaa386bf9ecc1e5b3002f64eb59172fcec4fd
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed, Nov 1 13:10:42 2017 +0200
    mlxsw: i2c: Fix buffer increment counter for write transaction

commit 7ca36994a3479e6d9d81baba34a426c47691ea08
Author: Arkadi Sharshevsky <arkadis@mellanox.com>
Date:   Wed Jun 14 09:27:39 2017 +0200
    mlxsw: reg: Add MCIA register for cable info access

commit 36ca68bf9919299c95ff80e7cf3c217f4c250cbe
Author: Elad Raz <eladr@mellanox.com>
Date:   Mon Jan 9 11:25:44 2017 +0100
    mlxsw: Fix mlxsw_i2c_write return value

commit d556e929164fdc6c94848374fc98c40852f97adb
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed Nov 16 15:20:46 2016 +0100
    mlxsw: minimal: Add I2C support for Mellanox ASICs

commit 6882b0aee180f2797b8803bdf699aa45c2e5f2d6
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed Nov 16 15:20:44 2016 +0100
    mlxsw: Introduce support for I2C bus

commit ba20de060094c64a981a4fec8fecc587d076383d
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed Oct 18 07:26:55 2017 +0000
    platform/x86: move Mellanox hardware platform hotplug driver to platform/mellanox

commit 6faadbbb7f9da70ce484f98f72223c20125a1009
Author: Christoph Hellwig <hch@lst.de>
Date:   Thu Sep 14 11:59:30 2017 +0200
    dmi: Mark all struct dmi_system_id instances const

commit 9a38b67c9877a7371a250454bbbbf521d02fded5
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed Dec 14 12:05:15 2016 +0000
    platform/x86: mlx-platform: mlxcpld-hotplug driver style fixes

commit 63d762b88cb5510f2bfdb5112ced18cde867ae61
Author: Dan Carpenter <dan.carpenter@oracle.com>
Date:   Sat Jan 7 09:33:34 2017 +0300
    platform/x86: mlx-platform: free first dev on error

commit afc4715901f0dce3206837a7051af05abf5a1e06
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Thu Oct 27 19:55:54 2016 +0000
    platform/x86: mlx-platform: Add mlxcpld-hotplug driver registration

commit c3886c9d6076555697551da9b921cf6a6e9cc2b5
Author: kbuild test robot <lkp@intel.com>
Date:   Fri Oct 28 01:26:50 2016 +0800
    platform/x86: mlx-platform: Fix semicolon.cocci warnings

commit 6613d18e90385db5cdbe32fe47567a3c11575b2d
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Mon Oct 31 07:22:33 2016 +0000
    platform/x86: mlx-platform: Move module from arch/x86

commit 304887041d953b6692c0d4a9f8fafb252d32e9a0
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Thu Oct 20 16:28:01 2016 +0000
    platform/x86: Introduce support for Mellanox hotplug driver

commit d4977c083aeb28cf72c1b019e3f9df13608126dd
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Tue Aug 29 20:06:21 2017 +0000
    hwmon: (pmbus) Add support for Intel VID protocol VR13

commit 610526527a13e4c91e64ec3dfb4626c5043291c9
Author: Vadim Pasternak <vadimp@mellanox.com>
Date:   Wed Aug 30 22:02:14 2017 +0000
    hwmon: (pmbus) Add support for Texas Instruments tps53679 device

In series file all the patches are listed and all old patches, relevant
for old 3.16 kernel are commented out.

Signed-off-by: Vadim Pasternak <vadimp@melanox.com>

* Makefile: uncomment line for applying kernel patches and config

This patch uncomments lines in Makefile related to applying patches and
configuration changes

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>

* config: mellanox kernel configuration

It adds explicit records for new configuration attributes which are not
set in kernel config.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>

Makefile

@@ -41,12 +41,12 @@ $(addprefix $(DEST)/, $(MAIN_TARGET)): $(DEST)/% :
 	fakeroot make -f debian/rules.gen setup_amd64_none_amd64
 
 	# Applying patches and configuration changes
-	# git init
-	# git add -f *
-	# git add debian/build/build_amd64_none_amd64/.config -f
-	# git commit -m "unmodified debian source"
-	# stg init
-	# stg import -s ../patch/series
+	git init
+	git add -f *
+	git add debian/build/build_amd64_none_amd64/.config -f
+	git commit -m "unmodified debian source"
+	stg init
+	stg import -s ../patch/series
 
 	# Building a custom kernel from Debian kernel source
 	DO_DOCS=False fakeroot make -f debian/rules -j $(shell nproc) binary-indep