Rename struct xilinx_cpm_pcie_port to xilinx_cpm_pcie to match the
convention of <driver>_pcie. No functional change intended.

Link: https://lore.kernel.org/r/20211223011054.1227810-24-helgaas@kernel.orgSigned-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>