LED: Battery Light [2/2]

PS2: Fix variable and fw/base overlays logic
PS3: works
PS4: change title to: Battery LED

Signed-off-by: Andre Saddler <dresadd09691@gmail.com>
Change-Id: I9c737d0cf49a1f84688b4295975e13dd8e91f874
Merge branch 'kitkat' of github.com:AOSPA-legacy/android_packages_apps_Settings into kk4.4

Conflicts:
	res/xml/display_settings.xml
	src/com/android/settings/DisplaySettings.java

Change-Id: I03b490d2f8cd7fea435a800c2cab4b253fe95e5f