USB forced fast charge

Thanx to Chad Froebel for posting his mod for the Galaxy Nexus !
(http://rootzwiki.com/topic/19720-kernel-patch-devs-only-force-ac-fast-charging/)

Conflicts:

	arch/arm/mach-msm/Kconfig
	arch/arm/mach-msm/htc_battery_8x60.c