[][mac80211][wifi6][core][move 4 addr nullfunc after drv_event_callback]

[Description]
Fix wds connection issue.
mt76 set channel in drv_event_callback and the 4 addr nullfunc may
be dropped. Send 4 addr nullfunc after drv_event_callback to avoid
this issue.

[Release-log]
N/A

Change-Id: Id9249cb050a2a7cb02e8be459d90c21bf7b49975
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/8876451
1 file changed