msm7x30: disable ambiental brightness

Change-Id: I5f2a8afc1570f30deba354c8a32554e71b049da0
msm7x30: wait for backlight resume

Change-Id: I470c2ef062a0d6b5cf491b4724e31cae2303ed09
mogami: export als values to userspace

Change-Id: I92a9d74daefd06ede308ebbad540bac7cff2c80f