drm/mediatek: Add support for MT8195 Digital Parallel Interface

Add support for the DPI block found in the MT8195 and MT8188 SoCs.
Inside of the SoC, this block is directly connected to the HDMI IP.

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250217154836.108895-11-angelogioacchino.delregno@collabora.com/


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