DO NOT MERGE ANYWHERE: Add dynamic illuminance hysteresis support am: 3275a3a5a5  -s ours am: d5bf4039a9  -s ours am: b2507eb7b7  -s ours
am: 027f685296  -s ours

Change-Id: Ibc3e2a639ecc8a9b49d899ae6298761dabbd2032