Merge branch 'remotes/lorenzo/pci/aardvark'

Merge branch 'remotes/lorenzo/pci/aardvark'

  - Train link immediately after enabling link training to avoid issues
    with Compex WLE900VX and Turris MOX devices (Pali Rohár)

  - Remove ASPM config and let the PCI core do it (Pali Rohár)

  - Interpret zero 'max-link-speed' value as invalid (Pali Rohár)

  - Respect the 'max-link-speed' property and improve link training (Marek
    Behún)

  - Issue PERST via GPIO (Pali Rohár)

  - Add PHY support (Marek Behún)

  - Use standard PCIe capability macros (Pali Rohár)

  - Document new 'max-link-speed', 'phys', and 'reset-gpios' properties
    (Marek Behún)

* remotes/lorenzo/pci/aardvark:
  dt-bindings: PCI: aardvark: Describe new properties
  PCI: aardvark: Replace custom macros by standard linux/pci_regs.h macros
  PCI: aardvark: Add PHY support
  PCI: aardvark: Add FIXME comment for PCIE_CORE_CMD_STATUS_REG access
  PCI: aardvark: Issue PERST via GPIO
  PCI: aardvark: Improve link training
  PCI: of: Zero max-link-speed value is invalid
  PCI: aardvark: Don't blindly enable ASPM L0s and don't write to read-only register
  PCI: aardvark: Train link immediately after enabling training