video: display_timing: add doubleclk flag

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

include/video/display_timing.h

@@ -27,6 +27,7 @@ enum display_flags {
 	DISPLAY_FLAGS_PIXDATA_NEGEDGE	= BIT(7),
 	DISPLAY_FLAGS_INTERLACED	= BIT(8),
 	DISPLAY_FLAGS_DOUBLESCAN	= BIT(9),
+	DISPLAY_FLAGS_DOUBLECLK		= BIT(10),
 };
 
 /*