[2/2] Add support for custom LED colors notification

Originally from dvtonder (CyanogenMod)

Conflicts:
	core/res/res/values/custom_arrays.xml
	core/res/res/values/symbols.xml
	services/java/com/android/server/BatteryService.java

Change-Id: Iab519a757220c444f166b8a05246c7ca71b897d8

Conflicts:
	core/java/android/provider/Settings.java