channel work: call for testing

[Adrian Chadd]

hiya,

Andriy has been working on fixing up the channel setup code in
net80211 and drivers. I'd like some help with testing!

* ath: https://reviews.freebsd.org/D6139
* bwn: https://reviews.freebsd.org/D6140
* iwn: https://reviews.freebsd.org/D6141
* mwl: https://reviews.freebsd.org/D6143
* run: https://reviews.freebsd.org/D6144

I'd like some help testing these out. You need to be running the very
latest -HEAD to test this out.

Thanks!


-adrian