settings: Enable missing 3dot menu for Location

* The code exists: https://github.com/android/platform_packages_apps_settings/commit/cb193d55e17fc7cfdb195eea9b6c4b4c7af66b4b
* Stock Nexus image has it, so we have it, too. I don't how this got left out.

Change-Id: I98d6c666b183f2ab488bff3d03b995b0ecda858d