dt-bindings: arm: amazon: add missing alpine-v2 DT binding

Amazon Annapurna Labs Alpine family includes: Alpine-v1, Alpine-v2.

This patch adds the missing DT binding of Alpine-v2 in amazon,al.yaml.

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Hanna Hawa <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
Acked-by: Antoine Tenart <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

Author: Hanna Hawa

Documentation/devicetree/bindings/arm/amazon,al.yaml

@@ -13,10 +13,15 @@ maintainers:
 
 properties:
   compatible:
-    items:
-      - const: al,alpine
-  model:
-    items:
-      - const: "Annapurna Labs Alpine Dev Board"
+    oneOf:
+      - description: Boards with Alpine V1 SoC
+        items:
+          - const: al,alpine
+
+      - description: Boards with Alpine V2 SoC
+        items:
+          - enum:
+              - al,alpine-v2-evp
+          - const: al,alpine-v2
 
 ...