dt-bindings: usb: qcom,dwc3: Add binding for SDX65

Add devicetree binding for SDX65 USB controller based on
Qcom designware IP.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1651482395-29443-3-git-send-email-quic_rohiagar@quicinc.com


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