by default git pulls in several code fragments not being licensed
under just GPL-2.0-only.
obstack and poll are licensed under GPL-2.0-or-later
reftable being BSD-3-Clause
sha1dc and inet_ntop being MIT
netmalloc being Bosst-1.0 aka BSL-1.0
regex being LGPL-2.1-or-later
Signed-off-by: Konrad Weihmann <kweihmann@outlook.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>