dt-bindings: iommu: apple: Add Apple M3 compatibles to DART

The DART is compatible with "apple,t8110-dart" introduced with Apple M1
Pro/Max and M2 devices.

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

Author: IntegralPilot

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

@@ -29,7 +29,9 @@ properties:
           - apple,t8110-dart
           - apple,t6000-dart
       - items:
-          - const: apple,t6020-dart
+          - enum:
+              - apple,t6020-dart
+              - apple,t8122-dart
           - const: apple,t8110-dart
 
   reg: