The current set of required packages was not sufficient to complete the
`make`, after following the usual route of:
`sudo apt-get install debhelper dh-autoreconf autotools-dev\
                      autoconf-archive doxygen graphviz libasound2-dev\
                      libtool libjpeg-dev qtbase5-dev libqt5opengl5-dev\
                      libudev-dev libx11-dev pkg-config udev make gcc git`
`./bootstrap.sh`
`./configure`
`make`

The following error was presented:
`moc: could not find a Qt installation of ''`

Fix this issue by adding the `qt5-default` package to the list of
requirements.

Fixes: 8d2093a8



Tested on: Debian version: Debian GNU/Linux 10 & Debian GNU/Linux 9
(Buster & Stretch(inside of a lxc container))
Additionally, I tested to build on a fresh VM, where I faced the same
problem.

Signed-off-by: Sebastian Fricke <sebastian.fricke.linux@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>