arm64: dts: imx8mm-venice-gw790: Pass GSC address/size-cells

Per gateworks-gsc.yaml, #address-cells and #size-cells are mandatory
properties.

Pass them to fix the following schema warning:

imx8mm-venice-gw7903.dtb: gsc@20: '#address-cells' is a required property
	from schema $id: http://devicetree.org/schemas/mfd/gateworks-gsc.yaml#
imx8mm-venice-gw7903.dtb: gsc@20: '#size-cells' is a required property
	from schema $id: http://devicetree.org/schemas/mfd/gateworks-gsc.yaml#Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7901.dts

@@ -357,6 +357,8 @@ gsc: gsc@20 {
 		interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
 		adc {
 			compatible = "gw,gsc-adc";

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7902.dts

@@ -314,6 +314,8 @@ gsc: gsc@20 {
 		interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
 		adc {
 			compatible = "gw,gsc-adc";

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7903.dts

@@ -280,6 +280,8 @@ gsc: gsc@20 {
 		interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
 		adc {
 			compatible = "gw,gsc-adc";

arch/arm64/boot/dts/freescale/imx8mm-venice-gw7904.dts

@@ -330,6 +330,8 @@ gsc: gsc@20 {
 		interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
 		adc {
 			compatible = "gw,gsc-adc";

arch/arm64/boot/dts/freescale/imx8mn-venice-gw7902.dts

@@ -312,6 +312,8 @@ gsc: gsc@20 {
 		interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
 		interrupt-controller;
 		#interrupt-cells = <1>;
+		#address-cells = <1>;
+		#size-cells = <0>;
 
 		adc {
 			compatible = "gw,gsc-adc";