Settings: read keyguard package name from overlays

Change-Id: Ief4750c91aa22c2033d31aacfea4cfbe245d61a8
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge "Settings: read keyguard package name from overlays" into cm-11.0
Settings: move keyguard wallpaper to system (2/2)

Change-Id: Id3bb66aa78c2e3dbd1170e74e33fcd160e5a70bb
Signed-off-by: Roman Birg <roman@cyngn.com>
Merge remote-tracking branch 'cm/cm-11.0' into cm-11.0-sgt7