iwlwifi: make iwlwifi send beacons

Handle BSS_CHANGED_BEACON_ENABLED to enable the sending
of beacons. Also set the correct HT RXON and QoS config.

Signed-off-by: Daniel C Halperin <daniel.c.halperin@intel.com>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --cc drivers/net/wireless/iwlwifi/iwl-agn.c
Simple merge

diff --cc drivers/net/wireless/iwlwifi/iwl-core.c
Simple merge