v4l: vsp1: Postpone page flip in event of display list race

If we try to commit the display list while an update is pending, we have
missed our opportunity. The display list manager will hold the commit
until the next interrupt.

In this event, we inform the vsp1 completion callback handler so that
the du will not perform a page flip out of turn.

Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
5 files changed