PCI: xilinx-xdma: Add Xilinx QDMA Root Port driver

PCI: xilinx-xdma: Add Xilinx QDMA Root Port driver

Add support for Xilinx QDMA Soft IP core as Root Port.

The Versal Prime devices support QDMA soft IP module in programmable logic.

The integrated QDMA Soft IP block has integrated bridge function that can
act as PCIe Root Port.

Link: https://lore.kernel.org/linux-pci/20240811022345.1178203-3-thippesw@amd.com
Signed-off-by: Thippeswamy Havalige <thippesw@amd.com>
[kwilczynski: removed unused header]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>