6e3bf1fe76
python-configobj package was removed in commit
8d264a9617 because of the missing
support for Python 3.x.
Meanwhile, this problem was fixed, hence readd the package.
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>