dt-bindings: phy: qcom,snps-eusb2-phy: Add compatible for SDX75

Add a dt-bindings compatible string for the SDX75 SoC that
uses Synopsis eUSB2 PHY.

Signed-off-by: Rohit Agarwal <quic_rohiagar@quicinc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/1695359525-4548-2-git-send-email-quic_rohiagar@quicinc.com


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