ARM: OMAP: add detection of omap5-dss

Add detection of omap5-dss nodes so that the related devices get
initialized.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

arch/arm/mach-omap2/display.c

@@ -635,6 +635,10 @@ struct device_node * __init omapdss_find_dss_of_node(void)
 	if (node)
 		return node;
 
+	node = of_find_compatible_node(NULL, NULL, "ti,omap5-dss");
+	if (node)
+		return node;
+
 	return NULL;
 }