dt-bindings: usb: rockchip,dwc3: update inno usb2 phy binding name

The binding for the inno usb2 phy was given a name in more a common format,
so update the reference in rockchip,dwc3.yaml as well.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/f8747552-d23b-c4cd-cb17-5033fb7f8eb6@gmail.comSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/usb/rockchip,dwc3.yaml

@@ -15,7 +15,7 @@ description:
   Phy documentation is provided in the following places.
 
   USB2.0 PHY
-  Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.yaml
+  Documentation/devicetree/bindings/phy/rockchip,inno-usb2phy.yaml
 
   Type-C PHY
   Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt