regulator: da9211: new regulator driver

This is the driver for the Dialog DA9211 Multi-phase 12A DC-DC Buck
Converter regulator. It communicates via an I2C bus to the device.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 789eb46..f5040fc 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -198,6 +198,16 @@
 	  converter 12A DC-DC Buck controlled through an I2C
 	  interface.
 
+config REGULATOR_DA9211
+	tristate "Dialog Semiconductor DA9211/DA9212 regulator"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say y here to support for the Dialog Semiconductor DA9211/DA9212.
+	  The DA9211/DA9212 is a multi-phase synchronous step down
+	  converter 12A DC-DC Buck controlled through an I2C
+	  interface.
+
 config REGULATOR_DBX500_PRCMU
 	bool