dt-bindings: arm64: dts: mediatek: Add mt8183-kukui-jacuzzi-fennel

Fennel is known as Lenovo IdeaPad Flex 3 Chromebook.
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210421090601.730744-6-hsinyi@chromium.orgSigned-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Documentation/devicetree/bindings/arm/mediatek.yaml

@@ -137,6 +137,14 @@ properties:
         items:
           - const: google,damu
           - const: mediatek,mt8183
+      - description: Google Fennel (Lenovo IdeaPad 3 Chromebook)
+        items:
+          - enum:
+              - google,fennel-sku0
+              - google,fennel-sku1
+              - google,fennel-sku6
+          - const: google,fennel
+          - const: mediatek,mt8183
       - description: Google Juniper (Acer Chromebook Spin 311) / Kenzo (Acer Chromebook 311)
         items:
           - enum: