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

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>