dt-bindings: iommu: renesas,ipmmu-vmsa: add r8a779f0 support

Document the compatible values for the IPMMU-VMSA blocks in
the Renesas R-Car S4-8 (R8A779F0) SoC and R-Car Gen4.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220208002030.1319984-2-yoshihiro.shimoda.uh@renesas.comSigned-off-by: Joerg Roedel <jroedel@suse.de>

Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.yaml

@@ -44,6 +44,10 @@ properties:
               - renesas,ipmmu-r8a77990 # R-Car E3
               - renesas,ipmmu-r8a77995 # R-Car D3
               - renesas,ipmmu-r8a779a0 # R-Car V3U
+      - items:
+          - enum:
+              - renesas,ipmmu-r8a779f0 # R-Car S4-8
+          - const: renesas,rcar-gen4-ipmmu-vmsa  # R-Car Gen4
 
   reg:
     maxItems: 1