regulator: max8893: Select REGMAP_I2C to fix build error

Fix build error if REGMAP_I2C is not set.

Signed-off-by: Axel Lin <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: AxelLin

drivers/regulator/Kconfig

@@ -581,6 +581,7 @@ config REGULATOR_MAX8660
 config REGULATOR_MAX8893
 	tristate "Maxim 8893 voltage regulator"
 	depends on I2C
+	select REGMAP_I2C
 	help
 	  This driver controls a Maxim 8893 voltage output
 	  regulator via I2C bus.