dt-bindings: display: mediatek: Add compatibles for MT8188 MDP3

Add compatible strings for the AAL, COLOR, MERGE and PADDING
hardware components found in MediaTek's MT8188 SoC.

This hardware is compatible with MT8195.

Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Acked-by: Chun-Kuang Hu <chunkuang.hu@mediatek.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20241218105320.38980-2-angelogioacchino.delregno@collabora.com


Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>