dt-bindings: i2c: apple,i2c: allow multiple compatibles

The intention was to have a SoC-specific and base compatible string
to allow forward compatibility and SoC specific quirks,

Fixes: df7c4a8c1b ("dt-bindings: i2c: Add Apple I2C controller bindings")
Signed-off-by: Janne Grunau <j@jannau.net>
Cc: Mark Kettenis <kettenis@openbsd.org>
Reviewed-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Mark Kettenis <kettenis@openbsd.org>
Tested-by: Hector Martin <marcan@marcan.st>
Acked-by: Wolfram Sang <wsa@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hector Martin <marcan@marcan.st>

Documentation/devicetree/bindings/i2c/apple,i2c.yaml

@@ -20,9 +20,9 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - apple,t8103-i2c
-      - apple,i2c
+    items:
+      - const: apple,t8103-i2c
+      - const: apple,i2c
 
   reg:
     maxItems: 1
@@ -51,7 +51,7 @@ unevaluatedProperties: false
 examples:
   - |
     i2c@35010000 {
-      compatible = "apple,t8103-i2c";
+      compatible = "apple,t8103-i2c", "apple,i2c";
       reg = <0x35010000 0x4000>;
       interrupt-parent = <&aic>;
       interrupts = <0 627 4>;