dt-bindings: display: mediatek: gamma: add compatible for MT8365 SoC

dt-bindings: display: mediatek: gamma: add compatible for MT8365 SoC

Document the display Gamma on MT8365, which is compatible
with that of the MT8183.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
Link: https://elixir.bootlin.com/linux/v6.10-rc4/source/Documentation/devicetree/bindings/display/mediatek/mediatek,dpi.yaml
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>