mac80211: reconfigure tx on device reconfiguration

Add tx_conf array to save the current tx queues
configuration, and reconfig it on resume (ieee80211_reconfig).

On resume, the driver is being reconfigured. Without
reconfiguring the tx queues as well, the driver might
configure the device to use wrong ac params (e.g. ps-poll
instead of uapsd).

Signed-off-by: Eliad Peller <eliad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc net/mac80211/cfg.c
Simple merge

diff --cc net/mac80211/ieee80211_i.h
Simple merge

diff --cc net/mac80211/mlme.c
Simple merge

diff --cc net/mac80211/util.c
Simple merge