settings: Enable location mode header switch

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

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

Change-Id: I94383acf8a64d27391c9332d3ff7bb1c73905bf7

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