regulator: max77650: add regulator support

Add regulator support for max77650. We support all four variants of this
PMIC including non-linear voltage table for max77651 SBB1 rail.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -468,6 +468,14 @@ config REGULATOR_MAX77620
 	  chip to control Step-Down DC-DC and LDOs. Say Y here to
 	  enable the regulator driver.
 
+config REGULATOR_MAX77650
+	tristate "Maxim MAX77650/77651 regulator support"
+	depends on MFD_MAX77650
+	help
+	  Regulator driver for MAX77650/77651 PMIC from Maxim
+	  Semiconductor. This device has a SIMO with three independent
+	  power rails and an LDO.
+
 config REGULATOR_MAX8649
 	tristate "Maxim 8649 voltage regulator"
 	depends on I2C

drivers/regulator/Makefile

@@ -61,6 +61,7 @@ obj-$(CONFIG_REGULATOR_LTC3676) += ltc3676.o
 obj-$(CONFIG_REGULATOR_MAX14577) += max14577-regulator.o
 obj-$(CONFIG_REGULATOR_MAX1586) += max1586.o
 obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77650) += max77650-regulator.o
 obj-$(CONFIG_REGULATOR_MAX8649)	+= max8649.o
 obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o
 obj-$(CONFIG_REGULATOR_MAX8907) += max8907-regulator.o