To prepare for addition of more flags to the display list, replace the
'internal' flag field by a bitmask 'flags' field.
Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: NKieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>