dt-bindings: iommu: apple,sart: Add Apple M3 compatibles

"apple,t8122-sart" is compatible to "apple,t6000-sart".

Signed-off-by: Michael Reeves <michael.reeves077@gmail.com>

Author: IntegralPilot

Documentation/devicetree/bindings/iommu/apple,sart.yaml

@@ -33,6 +33,7 @@ properties:
           - enum:
               - apple,t6020-sart
               - apple,t8112-sart
+              - apple,t8122-sart
           - const: apple,t6000-sart
       - enum:
           - apple,t6000-sart