Bugfixes:

* Move the wake_queue logic from tx_intr to clean_tx
* Always do wake_queue even if queue wasn't full before clean since
  it's safe to do
* Fix polarity in checks in pasemi_mac_close
Signed-off-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>