dt-bindings: USB: Add bindings for new Ingenic SoCs.

Add the USB PHY bindings for the JZ4780 SoC, the X1000 SoC and
the X1830 SoC from Ingenic.
Tested-by: 周正 (Zhou Zheng) <sernia.zhou@foxmail.com>
Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

Documentation/devicetree/bindings/usb/ingenic,jz4770-phy.yaml

@@ -4,10 +4,11 @@
 $id: http://devicetree.org/schemas/usb/ingenic,jz4770-phy.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Ingenic JZ4770 USB PHY devicetree bindings
+title: Ingenic SoCs USB PHY devicetree bindings
 
 maintainers:
   - Paul Cercueil <paul@crapouillou.net>
+  - 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
 
 properties:
   $nodename:
@@ -16,6 +17,9 @@ properties:
   compatible:
     enum:
       - ingenic,jz4770-phy
+      - ingenic,jz4780-phy
+      - ingenic,x1000-phy
+      - ingenic,x1830-phy
 
   reg:
     maxItems: 1