This reverts commit 992cbf19.

Until we make fbdev layer atomic we can't call this.

Requested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com?
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDave Airlie <airlied@redhat.com>