regulator: lp873x: Change the MFD config option as per latest naming

Change the MFD config option as per latest naming
Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/regulator/Kconfig

@@ -323,7 +323,7 @@ config REGULATOR_LP872X
 
 config REGULATOR_LP873X
 	tristate "TI LP873X Power regulators"
-	depends on MFD_LP873X && OF
+	depends on MFD_TI_LP873X && OF
 	help
 	  This driver supports LP873X voltage regulator chips. LP873X
 	  provides two step-down converters and two general-purpose LDO