buildroot

connman-gtk: new package

It was added to the networking category close to connman for the ability
to tweak connman features without going around (i.e. add support for
wifi and so on).

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>