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 am: 8b271611f0  -s ours am: 6ce786751b  -s ours
am: 811c7acaa2  -s ours

Change-Id: I7c6cbc33a3773b24e30e8de891f5730b9c736d72