OMAPDSS: apply: wait pending updates on manager disable

We should wait for any pending updates when an overlay manager is
about to be disabled, because the updates will never be finished if the
manager is disabled too early.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/fbdev/omap2/dss/apply.c

@@ -1132,6 +1132,8 @@ static void dss_mgr_disable_compat(struct omap_overlay_manager *mgr)
 	if (!mp->enabled)
 		goto out;
 
+	wait_pending_extra_info_updates();
+
 	if (!mgr_manual_update(mgr))
 		dispc_mgr_disable_sync(mgr->id);