drm/armada: use drm_plane_force_disable() to disable the overlay plane

Use drm_plane_force_disable() to disable the overlay plane on a mode_set
rather than coding this ourselves.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2015-06-29 17:52:42 +01:00
commit f8e1406982