regulator: da9211: support da9215

This is a patch for supporting da9215 buck converter.

Signed-off-by: James Ban <james.ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index bef3bde..23496da 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -209,13 +209,13 @@
 	  interface.
 
 config REGULATOR_DA9211
-	tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214 regulator"
+	tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214/DA9215 regulator"
 	depends on I2C
 	select REGMAP_I2C
 	help
 	  Say y here to support for the Dialog Semiconductor DA9211/DA9212
-	  /DA9213/DA9214.
-	  The DA9211/DA9212/DA9213/DA9214 is a multi-phase synchronous
+	  /DA9213/DA9214/DA9215.
+	  The DA9211/DA9212/DA9213/DA9214/DA9215 is a multi-phase synchronous
 	  step down converter 12A or 16A DC-DC Buck controlled through an I2C
 	  interface.