Currently wifi-scripts ucode appends airtime_mode to hostapd config file
unconditionally.
However this breaks bringing up interface with hostapd-mini
because the mini variant doesn't support airtime policy.
Fix this by changing the script to append airtime_mode only when
airtime_mode is set to greater than zero value in /etc/config/wireless.
Fixes: #20136Fixes: #20314
Signed-off-by: Zhi-Jun You <hujy652@protonmail.com>
6a68c2fef0