ARM: dts: omap4-duovero-parlor: remove unneded unit name

This patch fixes the following DTC warnings for omap4-duovero-parlor.dtb:

"connector@0 has a unit name, but no reg property"
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/omap4-duovero-parlor.dts

@@ -40,7 +40,7 @@ button0@121 {
 		};
 	};
 
-	hdmi0: connector@0 {
+	hdmi0: connector {
 		compatible = "hdmi-connector";
 		label = "hdmi";