SPDX moved from GPL-2.0 to GPL-2.0-only and from GPL-2.0+ to GPL-2.0-or-later. Reflect that in the SPDX license headers. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Mark-MC Lee (李明昌) <Mark-MC.Lee@mediatek.com>