New ath code works well as AP

[Adrian Chadd]

Please do try again.

I'd like to nail any card reset and instability issues as soon as they
pop up. -HEAD should be pretty good with those NICs now.
I use all of them (AR5416, AR9160, AR9220, AR9280, AR9285, AR9287,
even an AR9227 where appropriate) and I've not seen any real
instability issues.

The main issues I see right now are very likely due to noisy
environments and ANI behaving poorly.



Adrian