dt-bindings: phy: qcom,qmp: Add SM8450 PCIe PHY bindings

There are two different PCIe PHYs on SM8450, one having one lane and
another with two lanes. Add support for second (gen4, two lanes) PHY.
Signed-off-by: NDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211218141754.503661-2-dmitry.baryshkov@linaro.orgSigned-off-by: NVinod Koul <vkoul@kernel.org>

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

@@ -51,6 +51,7 @@ properties:
       - qcom,sm8350-qmp-usb3-phy
       - qcom,sm8350-qmp-usb3-uni-phy
       - qcom,sm8450-qmp-gen3x1-pcie-phy
+      - qcom,sm8450-qmp-gen4x2-pcie-phy
       - qcom,sm8450-qmp-ufs-phy
       - qcom,sm8450-qmp-usb3-phy
       - qcom,sdx55-qmp-pcie-phy
@@ -336,6 +337,7 @@ allOf:
               - qcom,sm8250-qmp-gen3x2-pcie-phy
               - qcom,sm8250-qmp-modem-pcie-phy
               - qcom,sm8450-qmp-gen3x1-pcie-phy
+              - qcom,sm8450-qmp-gen4x2-pcie-phy
     then:
       properties:
         clocks: