ARM: dts: gose: Fix ports node name for adv7180

When adding the adv7180 device node the ports node was misspelled as
port, fix this.

Fixes: 8cae3590 ("ARM: dts: gose: add composite video input")
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20200704155856.3037010-2-niklas.soderlund+renesas@ragnatech.seSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

arch/arm/boot/dts/r8a7793-gose.dts

@@ -336,7 +336,7 @@ composite-in@20 {
 			reg = <0x20>;
 			remote = <&vin1>;
 
-			port {
+			ports {
 				#address-cells = <1>;
 				#size-cells = <0>;