ARM: dts: sun4i: Fix HDMI output DTC warning

Our HDMI output endpoint on the A10 DTSI has a warning under DTC: "graph
node has single child node 'endpoint', #address-cells/#size-cells are not
necessary". Fix this by removing those properties.
Signed-off-by: NMaxime Ripard <maxime.ripard@bootlin.com>
Acked-by: NChen-Yu Tsai <wens@csie.org>

arch/arm/boot/dts/sun4i-a10.dtsi

@@ -530,8 +530,6 @@
 				};
 
 				hdmi_out: port@1 {
-					#address-cells = <1>;
-					#size-cells = <0>;
 					reg = <1>;
 				};
 			};