[PATCH v8 2/3] dt-bindings: arm-smmu: Add binding for Tegra194 SMMU

[Pritesh Raithatha]

> Add binding for NVIDIA's Tegra194 SoC SMMU topology that is based on ARM
> MMU-500.
> 
> Signed-off-by: Krishna Reddy <vdumpa at nvidia.com>

Reviewed-by: Pritesh Raithatha <praithatha at nvidia.com>