Merge branch 'remotes/lorenzo/pci/cadence'

- Add DT binding and TI j721e support for refclk to PCIe connector (Kishon
  Vijay Abraham I)

- Add host mode and endpoint mode DT bindings for TI AM64 SoC (Kishon Vijay
  Abraham I)

* remotes/lorenzo/pci/cadence:
  PCI: j721e: Add support to provide refclk to PCIe connector
  dt-bindings: PCI: ti,j721e: Add endpoint mode dt-bindings for TI's AM64 SoC
  dt-bindings: PCI: ti,j721e: Add host mode dt-bindings for TI's AM64 SoC
  dt-bindings: PCI: ti,j721e: Add binding to represent refclk to the connector