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

Originally from dvtonder (CyanogenMod)

Change-Id: Iab519a757220c444f166b8a05246c7ca71b897d8
Signed-off-by: iceandfire <arhamjamal@gmail.com>

Conflicts:
	core/java/android/provider/Settings.java
	media/java/android/media/RemoteDisplayState.aidl
fb: small observer multiuser correction on notificationlight

Change-Id: I3bbe4c772f801e3edfc97f9e17000b03c861dd1f
Missed these for LED customization

Signed-off-by: iceandfire <arhamjamal@gmail.com>