[][MAC80211][app][atenl: support mt7986]

[Description]
Add support for mt7986 and rework commands.

[Release-log]
N/A

Change-Id: Ibeb9a0bf260dca17dfae249929af0eac2a6b51f4
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6050196
12 files changed