arm64: dts: imx8mq: Fix lcdif clocks

Add display APB and AXI clocks as required by bindings. This fixes the
warnings:
lcd-controller@30320000: clocks: [[2, 128]] is too short
        From schema: Documentation/devicetree/bindings/display/fsl,lcdif.yaml
lcd-controller@30320000: clock-names: ['pix'] is too short
        From schema: Documentation/devicetree/bindings/display/fsl,lcdif.yaml
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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

@@ -550,8 +550,10 @@ lcdif: lcd-controller@30320000 {
 				compatible = "fsl,imx8mq-lcdif", "fsl,imx6sx-lcdif";
 				reg = <0x30320000 0x10000>;
 				interrupts = <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
-				clocks = <&clk IMX8MQ_CLK_LCDIF_PIXEL>;
-				clock-names = "pix";
+				clocks = <&clk IMX8MQ_CLK_LCDIF_PIXEL>,
+					 <&clk IMX8MQ_CLK_DISP_APB_ROOT>,
+					 <&clk IMX8MQ_CLK_DISP_AXI_ROOT>;
+				clock-names = "pix", "axi", "disp_axi";
 				assigned-clocks = <&clk IMX8MQ_VIDEO_PLL1_REF_SEL>,
 						  <&clk IMX8MQ_VIDEO_PLL1_BYPASS>,
 						  <&clk IMX8MQ_CLK_LCDIF_PIXEL>,