When we hae screen objects we are allowed to place the overlay source
in the GMR area, do this as this will save precious VRAM.
Signed-off-by: NJakob Bornecrantz <jakob@vmware.com>
Reviewed-by: NThomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>