g3: de-commonize thermal-engine config

Change-Id: I3afe23a3616da7e545b5192bfa1e7ac46291b754
torch: use the dual-led torch node, update values

* prolonged exposure to bright lights may cause cancer or blindness

Change-Id: I37d31eb46149c27438d8dd7df072a6748cb11c95
g3: use xxhdpi dalvik heap settings

Change-Id: I41eb17a38c6b0acbfd6ab1a0bcfe2a3a17dd736f