dt-bindings: arm-smmu: Add compatible for Tegra234 SOC

The NVIDIA Tegra234 SoC comes with one single-instance ARM SMMU used by
isochronous memory clients and two dual-instance ARM SMMUs used by non-
isochronous memory clients.

Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20220429082243.496000-3-thierry.reding@gmail.com
Signed-off-by: Will Deacon <will@kernel.org>

Author: thierryreding

Documentation/devicetree/bindings/iommu/arm,smmu.yaml

@@ -64,8 +64,9 @@ properties:
           for improved performance.
         items:
           - enum:
-              - nvidia,tegra194-smmu
               - nvidia,tegra186-smmu
+              - nvidia,tegra194-smmu
+              - nvidia,tegra234-smmu
           - const: nvidia,smmu-500
       - items:
           - const: arm,mmu-500
@@ -185,8 +186,9 @@ allOf:
         compatible:
           contains:
             enum:
-              - nvidia,tegra194-smmu
               - nvidia,tegra186-smmu
+              - nvidia,tegra194-smmu
+              - nvidia,tegra234-smmu
     then:
       properties:
         reg: