regulator: pmic: act8600: Add support for act8600 regulator pmic

Adds support for act8600 pmic regulator. Driver is based on
act8865-regulator.

Summary of driver features:
DCDC1-3 Voltage scaling has been tested
SUDCDC4 Voltage scaling has undergone limited testing
LDO5-8  Voltage scaling has been tested
LDO9-10 Fixed voltage enable/disable has been tested
VBUS is untested
Charging support has not been implemented fully.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>

Conflicts:
	arch/mips/jz4780/dts/ci20.dts

drivers/regulator/Kconfig

@@ -70,6 +70,14 @@ config REGULATOR_88PM8607
 	help
 	  This driver supports 88PM8607 voltage regulator chips.
 
+config REGULATOR_ACT8600
+	tristate "Active-semi act8600 voltage regulator"
+	depends on I2C && OF
+	select REGMAP_I2C
+	help
+	  This driver controls a active-semi act8600 voltage output
+	  regulator via I2C bus.
+
 config REGULATOR_ACT8865
 	tristate "Active-semi act8865 voltage regulator"
 	depends on I2C

drivers/regulator/Makefile

@@ -14,6 +14,7 @@ obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
 obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o
 obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
 obj-$(CONFIG_REGULATOR_AB8500)	+= ab8500-ext.o ab8500.o
+obj-$(CONFIG_REGULATOR_ACT8600) += act8600-regulator.o
 obj-$(CONFIG_REGULATOR_ACT8865) += act8865-regulator.o
 obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o