c9331e9c Tue Feb 25 06:46:58 CST 2020 Alex Bennée <alex.bennee@linaro.org> travis.yml: single-thread build-tcg stages
This still seems to be a problem for Travis.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20200225124710.14152-8-alex.bennee@linaro.org>