[][MAC80211][core][Add DFS available state reset cmd in debugfs]

[Description]
Add DFS available state reset cmd in debugfs
This cmd is used for debugging & DFS autotest script

[Release-log]
N/A

Change-Id: I48d3bb83ad14ad48ce85e44744fa479e35610081
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7427980
2 files changed