pci:add support aer/pme interrupts with none MSI/MSI-X/INTx mode

On some platforms, root port doesn't support MSI/MSI-X/INTx in RC mode.
When chip support the aer/pme interrupts with none MSI/MSI-X/INTx mode,
maybe there is interrupt line for aer pme etc. Search the interrupt
number in the fdt file. Then fixup the dev->irq with it.

Signed-off-by: Po Liu <po.liu@nxp.com>
Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>