OMAPDSS: add OMAP_DISPLAY_TYPE_DVI

Add new display bus type for DVI. This is not used by omapdss driver
itself, but is used by external encoder chips that output DVI.

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

drivers/video/omap2/dss/display.c

@@ -61,6 +61,7 @@ int omapdss_default_get_recommended_bpp(struct omap_dss_device *dssdev)
 	case OMAP_DISPLAY_TYPE_VENC:
 	case OMAP_DISPLAY_TYPE_SDI:
 	case OMAP_DISPLAY_TYPE_HDMI:
+	case OMAP_DISPLAY_TYPE_DVI:
 		return 24;
 	default:
 		BUG();

include/video/omapdss.h

@@ -70,6 +70,7 @@ enum omap_display_type {
 	OMAP_DISPLAY_TYPE_DSI		= 1 << 3,
 	OMAP_DISPLAY_TYPE_VENC		= 1 << 4,
 	OMAP_DISPLAY_TYPE_HDMI		= 1 << 5,
+	OMAP_DISPLAY_TYPE_DVI		= 1 << 6,
 };
 
 enum omap_plane {