drm/omap: Replace struct omap_video_timings with videomode

omap_video_timings can be replaced with the generic videomode in omapdrm
and the omap_video_timings can be removed.

This patch will replace the omap_video_timings with videomode.
With the change we no longer need the functions to convert to/from
videomode and drm_display_mode to omap_video_timings, these can be removed
as well.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index 24f8594..28fc5c1 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -202,7 +202,7 @@ void dss_mgr_disconnect(enum omap_channel channel,
 EXPORT_SYMBOL(dss_mgr_disconnect);
 
 void dss_mgr_set_timings(enum omap_channel channel,
-		const struct omap_video_timings *timings)
+		const struct videomode *timings)
 {
 	dss_mgr_ops->set_timings(channel, timings);
 }