media: aspeed: Remove duplicated include in aspeed-video.c

Fix following includecheck warning:
./drivers/media/platform/aspeed-video.c: linux/videodev2.h is included
more than once.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>