Use SystemClock.elapsedRealtime() instead of sensor timestamp

when processing light and proximity events.
This should fix loss of 2 second hysterisis for light sensor (b/2243521)

Change-Id: Ia3ce331e67d803eb5e51810cb7161b7c528312d7
Signed-off-by: Mike Lockwood <lockwood@android.com>
1 file changed