dt-bindings: PCI: fsl,imx6q-pcie-ep: Add compatible string fsl,imx8q-pcie-ep

Add new compatible string fsl,imx8q-pcie-ep for iMX8Q.

The 'reg-names' property only needs 'dbi' and 'addr_space' because the
others are located at a default offset. The new 'clock-names' property
aligns with the Root Complex (RC) naming.

Link: https://lore.kernel.org/r/20241119-pci_fixup_addr-v8-5-c4bfa5193288@nxp.com


Signed-off-by: Frank Li <Frank.Li@nxp.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>