dt-bindings: phy: qcom,qusb2: Document IPQ9574 compatible

Document the compatible string used for the qusb2 phy in IPQ9574.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Link: https://lore.kernel.org/r/d55c95a6bfeef3f49fdbcde9bc97157374e81a65.1683630932.git.quic_varada@quicinc.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/phy/qcom,qusb2-phy.yaml

@@ -18,13 +18,14 @@ properties:
     oneOf:
       - items:
           - enum:
+              - qcom,ipq6018-qusb2-phy
               - qcom,ipq8074-qusb2-phy
+              - qcom,ipq9574-qusb2-phy
               - qcom,msm8953-qusb2-phy
               - qcom,msm8996-qusb2-phy
               - qcom,msm8998-qusb2-phy
               - qcom,qcm2290-qusb2-phy
               - qcom,sdm660-qusb2-phy
-              - qcom,ipq6018-qusb2-phy
               - qcom,sm4250-qusb2-phy
               - qcom,sm6115-qusb2-phy
       - items: