[media] i2c: vs6624: use module_i2c_driver to simplify the code

Use the module_i2c_driver() macro to make the code smaller
and a bit simpler.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch

)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>