drm/omap: add define for DISPC_IRQ_WBUNCOMPLETEERROR

OMAP4+ DSS has WBUNCOMPLETEERROR irq, which was not defined in the irq
list. Add the define.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

include/video/omapdss.h

@@ -51,6 +51,7 @@
 #define DISPC_IRQ_FRAMEDONEWB		(1 << 23)
 #define DISPC_IRQ_FRAMEDONETV		(1 << 24)
 #define DISPC_IRQ_WBBUFFEROVERFLOW	(1 << 25)
+#define DISPC_IRQ_WBUNCOMPLETEERROR	(1 << 26)
 #define DISPC_IRQ_SYNC_LOST3		(1 << 27)
 #define DISPC_IRQ_VSYNC3		(1 << 28)
 #define DISPC_IRQ_ACBIAS_COUNT_STAT3	(1 << 29)