Merge branch 'pci/controller/rcar-gen4'

- Add Synopsys DWC macros for lane skew configuration (Yoshihiro Shimoda)

- Add struct rcar_gen4_pcie_drvdata to provide for future SoCs with
  different initialization requirements (Yoshihiro Shimoda)

- Add .ltssm_control() method for SoC dependencies (Yoshihiro Shimoda)

- Add r8a779g0 (R-Car V4H) support (Yoshihiro Shimoda)

* pci/controller/rcar-gen4:
  PCI: rcar-gen4: Add support for R-Car V4H
  PCI: rcar-gen4: Add .ltssm_control() for other SoC support
  PCI: rcar-gen4: Add struct rcar_gen4_pcie_drvdata
  PCI: dwc: Add PCIE_PORT_{FORCE,LANE_SKEW} macros