dt-bindings: arm: google: add gs101-raven

Raven is Google's code name for Pixel 6 Pro. Since there are
differences compared to Pixel 6 (Oriole), we need to add a separate
compatible for it.

Reviewed-by: Peter Griffin <[e-mail]>
Acked-by: Rob Herring (Arm) <[e-mail]>
Signed-off-by: André Draszik <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

Documentation/devicetree/bindings/arm/google.yaml

···
     const: '/'
   compatible:
     oneOf:
-      - description: Google Pixel 6 / Oriole
+      - description: Google Pixel 6 or 6 Pro (Oriole or Raven)
         items:
           - enum:
               - google,gs101-oriole
+              - google,gs101-raven
           - const: google,gs101
 
   # Bootloader requires empty ect node to be present