dt-bindings: phy: Fix node descriptions in uniphier-phy example

Prior to adding dt-bindings for SoC-dependent controllers, rename the
phy nodes and their parent nodes to the generic names in the example.

And drop parent nodes of each phy as they are not directly necessary here.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]
Link: https://lore.kernel.org/r/20221213082449.2721-8-hayashi.kunihiko@socionext.com
Signed-off-by: Rob Herring <robh@kernel.org>

dt-bindings: phy: uniphier-usb2: Add vbus-supply

UniPhier USB2 PHY controller can apply vbus-supply.
Add "vbus-supply" property to fix the following warning.

uniphier-pro4-ace.dtb: usb-glue: phy@2: 'vbus-supply' does not match any of the regexes: 'pinctrl-[0-9]+'
From schema: Documentation/devicetree/bindings/phy/socionext,uniphier-usb2-phy.yaml

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1648637715-19262-2-git-send-email-hayashi.kunihiko@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

dt-bindings: phy: Convert UniPhier USB2-PHY controller to json-schema

Convert the UniPhier USB2-PHY conroller to DT schema format.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>