flo: Add USB-OTG support from CM

Fixes mounting of storage connected via USB-OTG

PS2: Added suggested changes

Change-Id: I0fe3b2dd1ab0b579bf9f7df994503b00855dd9f4

Conflicts:
	fstab.flo
	init.flo.rc
	overlay/frameworks/base/core/res/res/xml/storage_list.xml
Merge "flo: Add USB-OTG support from CM" into kitkat