Merge branch 'remotes/lorenzo/pci/dt'

Merge branch 'remotes/lorenzo/pci/dt'

  - Add common schema for PCI endpoint controllers (Kishon Vijay Abraham I)

  - Add host and endpoint schemas for Cadence PCIe core (Kishon Vijay
    Abraham I)

  - Convert Cadence platform bindings to DT schema (Kishon Vijay Abraham I)

* remotes/lorenzo/pci/dt:
  dt-bindings: PCI: Convert PCIe Host/Endpoint in Cadence platform to DT schema
  dt-bindings: PCI: cadence: Add PCIe RC/EP DT schema for Cadence PCIe
  dt-bindings: PCI: Add PCI Endpoint Controller Schema