MLK-19395 ARM64: dts: freescale: imx8qxp-ddr3l-val: correct model name

i.MX8QXP DDR3L board includes i.MX8QXP LPDDR4 ARM2 board's dts,
but need to overwrite the model name accordingly.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Robin Gong <yibin.gong@nxp.com>

arch/arm64/boot/dts/freescale/fsl-imx8qxp-ddr3l-val.dts

@@ -15,6 +15,9 @@
 #include "fsl-imx8qxp-lpddr4-arm2.dts"
 
 / {
+	model = "Freescale i.MX8QXP DDR3L VALIDATION";
+	compatible = "fsl,imx8qxp-ddr3l-val", "fsl,imx8qxp";
+
 	reserved-memory {
 		linux,cma {
 			compatible = "shared-dma-pool";