dt-bindings: clock: Add documentation for MAC PHY control bindings.

Update the CGU binding documentation, add mac-phy-ctrl as a
pattern property.

Signed-off-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Documentation/devicetree/bindings/clock/ingenic,cgu.yaml

@@ -93,6 +93,8 @@ required:
 patternProperties:
   "^usb-phy@[a-f0-9]+$":
     allOf: [ $ref: "../phy/ingenic,phy-usb.yaml#" ]
+  "^mac-phy-ctrl@[a-f0-9]+$":
+    allOf: [ $ref: "../net/ingenic,mac.yaml#" ]
 
 additionalProperties: false