arm64: dts: imx8mq: Pass address-cells/size-cells to mipi_dsi

mipi_dsi node requires #address-cells and #size-cells.

Pass them to fix the following schema warnings:

imx8mq-mnt-reform2.dtb: mipi-dsi@30a00000: '#address-cells' is a required property
From schema: Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml
imx8mq-mnt-reform2.dtb: mipi-dsi@30a00000: '#size-cells' is a required property
From schema: Documentation/devicetree/bindings/display/bridge/nwl-dsi.yaml

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: Fabio Estevam

arch/arm64/boot/dts/freescale/imx8mq.dtsi

@@ -1059,6 +1059,8 @@
 			mipi_dsi: dsi@30a00000 {
 				compatible = "fsl,imx8mq-nwl-dsi";
 				reg = <0x30a00000 0x300>;
+				#address-cells = <1>;
+				#size-cells = <0>;
 				clocks = <&clk IMX8MQ_CLK_DSI_CORE>,
 					 <&clk IMX8MQ_CLK_DSI_AHB>,
 					 <&clk IMX8MQ_CLK_DSI_IPG_DIV>,