dt-bindings: usb: dwc3: Add Google Tensor G5 DWC3

dt-bindings: usb: dwc3: Add Google Tensor G5 DWC3

Document the device tree bindings for the DWC3 USB controller found in
Google Tensor SoCs, starting with the G5 generation (codename: laguna).

The Tensor G5 silicon represents a complete architectural departure from
previous generations (like gs101), including entirely new clock/reset
schemes, top-level wrapper and register interface. Consequently,
existing Samsung/Exynos DWC3 USB bindings are incompatible, necessitating
this new device tree binding.

The USB controller on Tensor G5 is based on Synopsys DWC3 IP and features
Dual-Role Device single port with hibernation support.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Roy Luo <royluo@google.com>
Link: https://patch.msgid.link/20251218-controller-v10-1-4047c9077274@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>