Merge branch 'pci/dt-bindings'

- Add rcar-pci-host missing IOMMU properties (Geert Uytterhoeven)

- Add ti,j721e-pci-host J784S4 Device ID (Siddharth Vadapalli)

- Add ti,j721e-pci-host J722S compatible string (Siddharth Vadapalli)

- Add ti,am65 num-viewport, phys, and phy-name properties (Jan Kiszka)

- Drop cdns,cdns-pcie-host redundant msi-parent and pci-bus.yaml (Krzysztof
  Kozlowski)

- Add mediatek,mt7621 missing reg property for child Root Ports (Krzysztof
  Kozlowski)

- Switch bindings from pci-bus.yaml to pci-host-bridge.yaml (Krzysztof
  Kozlowski)

- Convert fsl,layerscape host and endpoint bindings to YAML (Frank Li)

- Add rcar-gen4-pci-host R-Car V4H (R8A779G0) compatible strings for both
  host and endpoint mode (Yoshihiro Shimoda)

- Add rockchip,rk3399-pcie maxItems for ep-gpios (Krzysztof Kozlowski)

* pci/dt-bindings:
  dt-bindings: PCI: rockchip,rk3399-pcie: Add missing maxItems to ep-gpios
  dt-bindings: PCI: rcar-gen4-pci-ep: Add R-Car V4H compatible
  dt-bindings: PCI: rcar-gen4-pci-host: Add R-Car V4H compatible
  dt-bindings: PCI: layerscape-pci: Convert to YAML format
  dt-bindings: PCI: mediatek,mt7621-pcie: Switch from deprecated pci-bus.yaml
  dt-bindings: PCI: host-bridges: Switch from deprecated pci-bus.yaml
  dt-bindings: PCI: mediatek,mt7621: Add missing child node reg
  dt-bindings: PCI: cdns,cdns-pcie-host: Drop redundant msi-parent and pci-bus.yaml
  dt-bindings: PCI: ti,am65: Fix remaining binding warnings
  dt-bindings: PCI: ti,j721e-pci-host: Add support for J722S SoC
  dt-bindings: PCI: rcar-pci-host: Add missing IOMMU properties
  dt-bindings: PCI: ti,j721e-pci-host: Add device-id for TI's J784S4 SoC