[rdk-b][mt7986][wifi-hal][Refactor RadioChannelsInUse]

[Description]
Refactor RadioChannelsInUse.
1. According to channel and bandwidth info to calculate what channels we used.
2. Update function ieee80211_frequency_to_channel from iw/util.c to latest for 6GHz.

[Release-log]
N/A

Change-Id: I17e5b6c36bb698feadf4ef1a861f3b0a2ccea9b0
1 file changed
tree: 0dc151873a7beca75b42a531917921409e3d035c
  1. src/