valentewx: enable sensor

Change-Id: Icc06f7ec9ead2f751a5675cb96ace4164a11be9f

Conflicts:

	arch/arm/mach-msm/htc/valente_wx/board-valente_wx-gpiomux.c
	arch/arm/mach-msm/htc/valente_wx/board-valente_wx.c