misc: Add driver support for MAX8997 MUIC

The MUIC function in MAX8997 device can be used as
a USB port detector and switch.
This patch supports the MUIC feature of MAX8997.

Signed-off-by: Donggeun Kim <dg77.kim@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/misc/Kconfig

@@ -500,6 +500,14 @@ config USB_SWITCH_FSA9480
 	  stereo and mono audio, video, microphone and UART data to use
 	  a common connector port.
 
+config MAX8997_MUIC
+	tristate "MAX8997 MUIC Support"
+	depends on MFD_MAX8997
+	help
+	  If you say yes here you get support for the MUIC device of
+	  Maxim MAX8997 PMIC.
+	  The MAX8997 MUIC is a USB port accessory detector and switch.
+
 source "drivers/misc/c2port/Kconfig"
 source "drivers/misc/eeprom/Kconfig"
 source "drivers/misc/cb710/Kconfig"