When creating and populating $sysconfdir, we should prepend $DESTDIR
as we do with all other paths.
Reported-by: NFrank Arnold <frank.arnold@amd.com>
Signed-off-by: NAndre Przywara <andre.przywara@amd.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>