There is no any reason to update overlay at crtc directly because the
crtc uses plane. Move its code to plane and call proper functions of
plane from crtc.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>