arm64: zynqmp: Fix address for tca6416_u97 chip on zcu104

I2c address is not 0x21 but 0x20. This patch is fixing both revA and
revC boards.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

arch/arm/dts/zynqmp-zcu104-revA.dts

@@ -130,9 +130,9 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <4>;
-			tca6416_u97: gpio@21 {
+			tca6416_u97: gpio@20 {
 				compatible = "ti,tca6416";
-				reg = <0x21>;
+				reg = <0x20>;
 				gpio-controller;
 				#gpio-cells = <2>;
 				/*

arch/arm/dts/zynqmp-zcu104-revC.dts

@@ -74,9 +74,9 @@
 	status = "okay";
 	clock-frequency = <400000>;
 
-	tca6416_u97: gpio@21 {
+	tca6416_u97: gpio@20 {
 		compatible = "ti,tca6416";
-		reg = <0x21>;
+		reg = <0x20>;
 		gpio-controller;
 		#gpio-cells = <2>;
 		/*