drm/mediatek: Replace custom compare_dev with component_compare_of

Remove the custom device comparison function compare_dev and replace it
with the existing kernel helper component_compare_of

Signed-off-by: Tang Dongxing <tang.dongxing@zte.com.cn>
Signed-off-by: Shao Mingyin <shao.mingyin@zte.com.cn>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20250403155419406T5YhIJKId1FWor70EWWHG@zte.com.cn/


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