Merge branch 'pci/controller/xilinx-xdma'

- Move Xilinx IRQ definitions to a common header shared by pcie-xilinx-cpm
  and xilinx-xdma (Thippeswamy Havalige)

- Add Xilinx XDMA driver and DT schema (Thippeswamy Havalige)

* pci/controller/xilinx-xdma:
  PCI: xilinx-xdma: Add Xilinx XDMA Root Port driver
  dt-bindings: PCI: xilinx-xdma: Add schemas for Xilinx XDMA PCIe Root Port Bridge
  PCI: xilinx-cpm: Move IRQ definitions to a common header