power: supply: add Qualcomm PMI8998 SMB2 Charger driver

Add a driver for the SMB2 charger block found in the Qualcomm PMI8998
and PM660.

Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

drivers/power/supply/Kconfig

@@ -897,4 +897,13 @@ config BATTERY_UG3105
 	  device is off or suspended, the functionality of this driver is
 	  limited to reporting capacity only.
 
+config CHARGER_QCOM_SMB2
+	tristate "Qualcomm PMI8998 PMIC charger driver"
+	depends on MFD_SPMI_PMIC
+	depends on IIO
+	help
+	  Say Y here to enable the Qualcomm PMIC Charger driver. This
+	  adds support for the SMB2 switch mode battery charger found
+	  in PMI8998 and related PMICs.
+
 endif # POWER_SUPPLY

drivers/power/supply/Makefile

@@ -108,3 +108,4 @@ obj-$(CONFIG_BATTERY_ACER_A500)	+= acer_a500_battery.o
 obj-$(CONFIG_BATTERY_SURFACE)	+= surface_battery.o
 obj-$(CONFIG_CHARGER_SURFACE)	+= surface_charger.o
 obj-$(CONFIG_BATTERY_UG3105)	+= ug3105_battery.o
+obj-$(CONFIG_CHARGER_QCOM_SMB2)	+= qcom_pmi8998_charger.o