[media] v4l2-ctrls.h: fully document the header file

There are lots of undocumented stuff on this header.

Document them.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2016-07-22 13:57:29 -03:00
commit 8ec4bee7c1