commit de22665065cca62b9135acd1d56599bfe4fc1500
author developer <developer@mediatek.com> Sat Nov 11 12:19:01 2023 +0800
committer developer <developer@mediatek.com> Wed Nov 15 02:47:11 2023 +0800
tree 96d2d625bc71dbce9d35461bc4b7de7106a4f867
parent f7aff4215b90f89f274f88b3806ec11b7b5458bb

[][MAC80211][WiFi6][hostapd][Backport hostapd ACS patches and some ACS fixes]

[Description]
Fix ACS issues in WiFi6 Codebase.

Backport the upstream hostapd commits about ACS.
 ACS: Allow selecting a better channel when using 40/80/160 MHz
 ACS: introduce acs_adjust_secondary
 ACS: Introduce acs_get_bw_center_chan()
 ACS: Extract bw40/80/160 freqs out of acs_usable_bwXXX_chan()

Fix Issue#1. Add 2.4G HT40- support
    1. Add 2.4G HT40- support
    2. Fix issue: selected best channel is out of channels

Fix Issue#2. Fix chan_switch to usable DFS channel fail due to ACS

[Release-log]
N/A

Change-Id: I56ff786744da83791f0134e0a1185abdf9c49bfb
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8237859