dt-bindings: PCI: mobiveil: Convert mobiveil-pcie.txt to YAML

Convert device tree binding document mobiveil-pcie.txt to YAML format
and merge layerscape-pcie-gen4.txt into this file.

Additional changes:

  - interrupt-names: "aer", "pme", "intr", which align order in examples.

  - reg-names: reorder as csr_axi_slave, config_axi_slave to match
    layerscape-pcie-gen4 and existing Layerscape DTS users.

Fix below CHECK_DTBS warning:

  arch/arm64/boot/dts/freescale/fsl-lx2160a-qds.dtb: /soc/pcie@3400000: failed to match any schema with compatible: ['fsl,lx2160a-pcie']

Link: https://lore.kernel.org/r/20241211171318.4129818-1-Frank.Li@nxp.com


Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
[bhelgaas: fix typos, whitespace, consistent bus-range usage]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>