What:		/sys/bus/i2c/devices/.../device
Date:		February 2011
Contact:	Minkyu Kang <mk7.kang@samsung.com>
Description:
		show what device is attached
		NONE - no device
		USB - USB device is attached
		UART - UART is attached
		CHARGER - Charger is attaced
		JIG - JIG is attached

What:		/sys/bus/i2c/devices/.../switch
Date:		February 2011
Contact:	Minkyu Kang <mk7.kang@samsung.com>
Description:
		show or set the state of manual switch
		VAUDIO - switch to VAUDIO path
		UART - switch to UART path
		AUDIO - switch to AUDIO path
		DHOST - switch to DHOST path
		AUTO - switch automatically by device
