dt-bindings: phy: tegra-xusb: Add support for Tegra234

Add the compatible string for the Tegra234 XUSB PHY.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230111110450.24617-3-jonathanh@nvidia.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

dt-bindings: phy: tegra-xusb: Convert to json-schema

Convert the Tegra XUSB pad controller bindings from free-form text
format to json-schema.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20230113150804.1272555-1-thierry.reding@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>