qcap: Fix compilation on older systems.

[Dmitry Timoshkov]

Damjan Jovanovic <damjan.jov at gmail.com> wrote:

> What does this patch do? libv4l1.h includes libv4l1-videodev.h which
> is a copy of linux/videodev.h. You should only need the one or the
> other. Are you saying there is a system where libv4l1.h is present but
> incomplete, and you need to include linux/videodev.h together with it?

libv4l1.h is almost empty on old systems.

-- 
Dmitry.