dt-bindings: arm-smmu: Allow mmu-400, smmu-v1 compatible

The Arm SMMUv1 DT binding only allows combining arm,mmu-401 with
arm,smmu-v1, even though the MMU-400 is compatible as well.

Allow this combination as well to let the Arm Juno board pass the test.

Signed-off-by: Andre Przywara <[email protected]>
Acked-by: Robin Murphy <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>

Author: Andre-ARM

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

@@ -41,7 +41,9 @@ properties:
           - const: arm,mmu-500
           - const: arm,smmu-v2
       - items:
-          - const: arm,mmu-401
+          - enum:
+              - arm,mmu-400
+              - arm,mmu-401
           - const: arm,smmu-v1
       - enum:
           - arm,smmu-v1