bnxt_en: New Broadcom ethernet driver.

Broadcom ethernet driver for the new family of NetXtreme-C/E
ethernet devices.

v5:
  - Removed empty blank lines at end of files (noted by David Miller).
  - Moved busy poll helper functions to bnxt.h to at least make the
    .c file look less cluttered with #ifdef (noted by Stephen Hemminger).

v4:
  - Broke up 2 long message strings with "\n" (suggested by John Linville)
  - Constify an array of strings (suggested by Stephen Hemminger)
  - Improve bnxt_vf_pciid() (suggested by Stephen Hemminger)
  - Use PCI_VDEVICE() to populate pci_device_id table for more compact
    source.

v3:
  - Fixed 2 more sparse warnings.
  - Removed some unused structures in .h files.

v2:
  - Fixed all kbuild test robot reported warnings.
  - Fixed many of the checkpatch.pl errors and warnings.
  - Fixed the Kconfig description (noted by Dmitry Kravkov).

Acked-by: Eddie Wai <eddie.wai@broadcom.com>
Acked-by: Jeffrey Huang <huangjw@broadcom.com>
Signed-off-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/Kconfig

@@ -170,4 +170,23 @@ config SYSTEMPORT
 	  Broadcom BCM7xxx Set Top Box family chipset using an internal
 	  Ethernet switch.
 
+config BNXT
+	tristate "Broadcom NetXtreme-C/E support"
+	depends on PCI
+	select FW_LOADER
+	select LIBCRC32C
+	---help---
+	  This driver supports Broadcom NetXtreme-C/E 10/25/40/50 gigabit
+	  Ethernet cards.  To compile this driver as a module, choose M here:
+	  the module will be called bnxt_en.  This is recommended.
+
+config BNXT_SRIOV
+	bool "Broadcom NetXtreme-C/E SR-IOV support"
+	depends on BNXT && PCI_IOV
+	default y
+	---help---
+	  This configuration parameter enables Single Root Input Output
+	  Virtualization support in the NetXtreme-C/E products. This
+	  allows for virtual function acceleration in virtual environments.
+
 endif # NET_VENDOR_BROADCOM

drivers/net/ethernet/broadcom/Makefile

@@ -12,3 +12,4 @@ obj-$(CONFIG_SB1250_MAC) += sb1250-mac.o
 obj-$(CONFIG_TIGON3) += tg3.o
 obj-$(CONFIG_BGMAC) += bgmac.o
 obj-$(CONFIG_SYSTEMPORT) += bcmsysport.o
+obj-$(CONFIG_BNXT) += bnxt/

drivers/net/ethernet/broadcom/bnxt/Makefile

@@ -0,0 +1,3 @@
+obj-$(CONFIG_BNXT) += bnxt_en.o
+
+bnxt_en-y := bnxt.o bnxt_sriov.o bnxt_ethtool.o