drm/mediatek: Remove unneeded semicolon

cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/mediatek/mtk_drm_drv.c:1092:2-3: Unneeded semicolon

Fixes: 4c932840 ("drm/mediatek: Implement OF graphs support for display paths")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202412022048.kY2ZhxZ4-lkp@intel.com/


Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20241230135314.5419-1-chunkuang.hu@kernel.org/


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