dt-bindings: phy: qcom,qmp: Add SDX65 USB PHY binding

Add devicetree YAML binding for Qualcomm QMP Super Speed (SS) PHY found
in SDX65.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1649740652-17515-2-git-send-email-quic_rohiagar@quicinc.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>