vendor: move keyguard overlays to the new 4.4 place

move it and clean up

Change-Id: If33fa30cbd0ae4533271811cf466406a012bd211
Add g2 variants to vendorsetup

Change-Id: I698814e2f4cd9ccc2797768fae7cf387fd95c639
Merge branch 'kk4.4' of https://github.com/SlimRoms/vendor_slim into kk4.4