overlay: adjust autobrightness levels

Change-Id: Icf9095185a7f38f4e88aab5bd9a215868f494a64
changes for device splitoff

Change-Id: Ieac9a7b1102290552acdb538afc6b2c6da4e83b8
kernel defconfig is defined in device specific config

Change-Id: Iad4f8a8f64bc21dadec8a0d62413f93950062808