dt-bindings: PCI: imx6q-pcie: Add i.MX8Q PCIe compatible string

Add i.MX8Q PCIe "fsl,imx8q-pcie" compatible strings. clock-names align
DesignWare Cores (DWC) common naming convension.

Link: https://lore.kernel.org/linux-pci/20240729-pci2_upstream-v8-9-b68ee5ef2b4d@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

Author: Richard Zhu

Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml

@@ -30,6 +30,7 @@ properties:
       - fsl,imx8mm-pcie
       - fsl,imx8mp-pcie
       - fsl,imx95-pcie
+      - fsl,imx8q-pcie
 
   clocks:
     minItems: 3
@@ -184,6 +185,21 @@ allOf:
             - const: pcie_bus
             - const: pcie_aux
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - fsl,imx8q-pcie
+    then:
+      properties:
+        clocks:
+          maxItems: 3
+        clock-names:
+          items:
+            - const: dbi
+            - const: mstr
+            - const: slv
+
 unevaluatedProperties: false
 
 examples: