drm/mediatek: Refactor pixel format logic

drm/mediatek: Refactor pixel format logic

Add an DDP component interface for querying pixel format support
and move list of supported pixel formats into DDP components
instead of mtk_drm_plane.c

Tested by running Chrome on an MT8195.

Signed-off-by: Justin Green <greenjustin@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20230309210416.1167020-2-greenjustin@chromium.org/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>