dt-bindings: spmi: apple,spmi: Add t8122-spmi compatible

Signed-off-by: Janne Grunau <j@jannau.net>

Author: jannau

Documentation/devicetree/bindings/spmi/apple,spmi.yaml

@@ -22,6 +22,7 @@ properties:
               - apple,t6020-spmi
               - apple,t8012-spmi
               - apple,t8015-spmi
+              - apple,t8122-spmi
           - const: apple,t8103-spmi
       - items:
           - enum: