Keep package list sorted, this eases rebase/cherry-pick.

Fixes: 3a678481
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200322120104.21267-2-philmd@redhat.com>
Message-Id: <20200323161514.23952-8-alex.bennee@linaro.org>