OMAPDSS: HDMI: add missing core irq

HDMI_IRQ_CORE was not defined in the hdmi.h.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/hdmi.h

@@ -48,7 +48,7 @@
 #define HDMI_WP_AUDIO_DATA			0x8C
 
 /* HDMI WP IRQ flags */
-
+#define HDMI_IRQ_CORE				(1 << 0)
 #define HDMI_IRQ_OCP_TIMEOUT			(1 << 4)
 #define HDMI_IRQ_AUDIO_FIFO_UNDERFLOW		(1 << 8)
 #define HDMI_IRQ_AUDIO_FIFO_OVERFLOW		(1 << 9)