usb: xhci: fsl: add new compatible fsl,ls1028a-dwc3

The official ls1028a binding of the driver uses the following as
compatibles:
  compatible = "fsl,ls1028a-dwc3", "snps,dwc3";

Change the ls1028a device tree and add this new compatible to the fsl
specific xhci driver, otherwise the generic dwc3 driver will be used
with the compatibles above.

Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/dts/fsl-ls1028a.dtsi b/arch/arm/dts/fsl-ls1028a.dtsi
index 34aad52..cc055e6 100644
--- a/arch/arm/dts/fsl-ls1028a.dtsi
+++ b/arch/arm/dts/fsl-ls1028a.dtsi
@@ -319,7 +319,7 @@
 		};
 
 		usb0: usb3@3100000 {
-			compatible = "fsl,layerscape-dwc3";
+			compatible = "fsl,ls1028a-dwc3", "snps,dwc3";
 			reg = <0x0 0x3100000 0x0 0x10000>;
 			interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
 			dr_mode = "host";
@@ -327,7 +327,7 @@
 		};
 
 		usb1: usb3@3110000 {
-			compatible = "fsl,layerscape-dwc3";
+			compatible = "fsl,ls1028a-dwc3", "snps,dwc3";
 			reg = <0x0 0x3110000 0x0 0x10000>;
 			interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
 			dr_mode = "host";