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

Document the display Overlay on MT8365, which is compatible
with that of the MT8192.

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://patchwork.kernel.org/project/dri-devel/patch/20231023-display-support-v4-9-ed82eb168fb1@baylibre.com/


Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>