dt-bindings: PCI: rcar-pci-host: Document r8a77965 bindings

Document the R-Car M3-N (R8A77965) SoC in the R-Car PCIe bindings.

Link: https://lore.kernel.org/r/1604455096-13923-3-git-send-email-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pci/rcar-pci-host.yaml

@@ -34,6 +34,7 @@ properties:
               - renesas,pcie-r8a7795      # R-Car H3
               - renesas,pcie-r8a7796      # R-Car M3-W
               - renesas,pcie-r8a77961     # R-Car M3-W+
+              - renesas,pcie-r8a77965     # R-Car M3-N
               - renesas,pcie-r8a77980     # R-Car V3H
               - renesas,pcie-r8a77990     # R-Car E3
           - const: renesas,pcie-rcar-gen3 # R-Car Gen3 and RZ/G2