Merge branch 'pci/controller/tegra264'

- Distinguish Tegra264 C0 PCIe controller for internal GPU from C1-C5
  controllers so the unit address matches the first 'reg' entry (Thierry
  Reding)

- Add Tegra264 Root Port stanzas to prepare for generic WAKE# handling
  (Thierry Reding)

- Add NVIDIA Tegra264 driver (Thierry Reding)

* pci/controller/tegra264:
  PCI: tegra264: Add Tegra264 support
  dt-bindings: PCI: tegra264: Switch to PCIe Root Port bindings
  dt-bindings: PCI: tegra264: Strictly distinguish C0 from C1-C5