dt-bindings: i3c: cdns: add Axiado AX3000 I3C controller

Add binding for AX3000 I3C controller. So far, no changes known,
so it can fallback to default compatible.

Reviewed-by: Krzysztof Kozlowski <[email protected]>
Signed-off-by: Harshit Shah <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

Author: hshahaxiado

Documentation/devicetree/bindings/i3c/cdns,i3c-master.yaml

@@ -14,7 +14,12 @@ allOf:
 
 properties:
   compatible:
-    const: cdns,i3c-master
+    oneOf:
+      - const: cdns,i3c-master
+      - items:
+          - enum:
+              - axiado,ax3000-i3c
+          - const: cdns,i3c-master
 
   reg:
     maxItems: 1