dt-bindings: usb: qcom,dwc3: document the SM8560 SuperSpeed DWC3 USB controller

Document the SuperSpeed DWC3 USB controller on the SM8650 Platform.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231030-topic-sm8650-upstream-bindings-dwc3-v2-1-60c0824fb835@linaro.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>