arm64: dts: imx8qm: Update edma channel for uart[0..3]

imx8qm have difference dma channel number for uart[0..3].
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8qm-ss-dma.dtsi

@@ -116,18 +116,22 @@ &flexcan3 {
 
 &lpuart0 {
 	compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
+	dmas = <&edma2 13 0 0>, <&edma2 12 0 1>;
 };
 
 &lpuart1 {
 	compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
+	dmas = <&edma2 15 0 0>, <&edma2 14 0 1>;
 };
 
 &lpuart2 {
 	compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
+	dmas = <&edma2 17 0 0>, <&edma2 16 0 1>;
 };
 
 &lpuart3 {
 	compatible = "fsl,imx8qm-lpuart", "fsl,imx8qxp-lpuart";
+	dmas = <&edma2 19 0 0>, <&edma2 18 0 1>;
 };
 
 &i2c0 {