ARM: dts: omap3-gta04: tvout: enable as display1 alias

The omap dss susbystem takes the display aliases to find
out which displays exist. To enable tv-out we must define
an alias.
Signed-off-by: NH. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap3-gta04.dtsi

@@ -28,6 +28,7 @@
 
 	aliases {
 		display0 = &lcd;
+		display1 = &tv0;
 	};
 
 	/* fixed 26MHz oscillator */