settings: Enable location mode header switch

Change-Id: I347e769351bc15daa87d3b6d684afe4e80416ecc
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	src/com/android/settings/Settings.java
	src/com/android/settings/location/LocationSettingsBase.java

Change-Id: I347e769351bc15daa87d3b6d684afe4e80416ecc