Remove unnecessary updateSurfaceScreenOn call.

This change stops updateSurfaceScreenOn() from being called one time
right after another. It's called at the end of stayAwake(boolean awake),
which is called right before updateSurfaceScreenOn() in release().
keyboard: adding functional alt/shift lights

This is useful for devices that has QWERTY keyboard
and leds for the Alt/Shift (Fn/Caps) keys, like
htc doubleshot.

Depends on libhardware patch for the light ids:
http://review.cyanogenmod.org/34902

Change-Id: I66ebc2d881438f5b51db77eaa885421e65a7da0d
Merge remote-tracking branch 'cm/cm-10.1' into cm-10.1