Progress on aggregation

["Luis R. Rodriguez" <lrodriguez@atheros.com>]

Just a quick note on the progress of aggregation. It works but we still
need to hanld the rtnl_lock() in a sane way. Johannes we proposing we
use a workqueue for this.

* iwl4965 has been tested to work
* ath9k *does* xmit aggregate frames but throughput is low

Since ath9k still needs some work we are looking into it.
Tomas, have you had a chance to consider the workqueue usage
for the rtnl_lock()? I figure to leave that to you as we
are still looking into the throughput issues with aggreation with
ath9k.

  Luis