[][MAC80211][core][mac80211: make 4addr null frames using min_rate for WDS]

Fix WDS issue

WDS needs 4addr packets to trigger AP for wlan0.sta creation.
However, the 4addr null frame is sent at a high rate so that AP can't receive it.
This PATCHES switches to use min_rate.


Change-Id: I16244c69e4fddfaba7305d36eb7df664ef67d367
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6250138
2 files changed