v4l-utils: Fix media-ctl support

The media-ctl package is generated with same name, but from a
different source. To offer an upgrade path the only change necessary
is to add 'media-ctl' in the PROVIDES so dependencies for build can be
satisfied.

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>