dt-bindings: phy: qcom,ipq8074-qmp-pcie: Document the IPQ9574 QMP PCIe PHYs

Document the QMP PCIe PHYs on IPQ9574 platform.

Acked-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: devi priya <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

Documentation/devicetree/bindings/phy/qcom,ipq8074-qmp-pcie-phy.yaml

···
       - qcom,ipq6018-qmp-pcie-phy
       - qcom,ipq8074-qmp-gen3-pcie-phy
       - qcom,ipq8074-qmp-pcie-phy
+      - qcom,ipq9574-qmp-gen3x1-pcie-phy
+      - qcom,ipq9574-qmp-gen3x2-pcie-phy
 
   reg:
     items: