Since disabling 5 GHz is complicated with KeyXchange v2, we
enable it again.
This may lead to an instable device!
This reverts commit f47e046293.
Reviewed-by: Tim Niemeyer <tim@tn-x.org>
Signed-off-by: Tim Niemeyer <tim@tn-x.org>
Reviewed-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Tested-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>