[2/2] Settings: Add lockscreen ring battery setting

Change-Id: Ia07ecc1feedee71b8ea217c53244fdef9ff1bc18
Signed-off-by: zwliew <zhaoweiliew@gmail.com>

Conflicts:
	res/values/custom_strings.xml
	res/xml/security_settings_chooser.xml
	src/com/android/settings/SecuritySettings.java