bacon: Add LED overlays

Change-Id: I48dad533cefa6721d3c316025080de5bea9db19d
bacon: Overlay for SAR levels.

Change-Id: I4f679eb4658dbd1e54297ad60249aa201ecc1890
Merge branch 'kitkat-legacy' of https://github.com/AOSPAL/android_device_oneplus_bacon into kitkat-legacy