ipq806x: d7800: fix warning on dtc compilation

There is warning with "property has invalid length (4 bytes)"
related to nand definition. Set size-cells to zero to fix this.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

target/linux/ipq806x/files-4.19/arch/arm/boot/dts/qcom-ipq8064-d7800.dts

@@ -188,7 +188,7 @@
 			pinctrl-names = "default";
 
 			#address-cells = <1>;
-			#size-cells = <1>;
+			#size-cells = <0>;
 
 			cs0 {
 				reg = <0>;
@@ -262,7 +262,8 @@
 			compatible = "virtual,mdio-gpio";
 			#address-cells = <1>;
 			#size-cells = <0>;
-			gpios = <&qcom_pinmux 1 GPIO_ACTIVE_HIGH &qcom_pinmux 0 GPIO_ACTIVE_HIGH>;
+			gpios = <&qcom_pinmux 1 GPIO_ACTIVE_HIGH>,
+				<&qcom_pinmux 0 GPIO_ACTIVE_HIGH>;
 			pinctrl-0 = <&mdio0_pins>;
 			pinctrl-names = "default";