iwlwifi : Set monitor mode for 3945

The patch leverages mac80211 configure_filter to enable iwl3945
monitor mode.

Signed-off-by: Abhijeet Kolekar <abhijeet.kolekar@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h
index fb96c62..9fdc140 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945.h
@@ -886,6 +886,7 @@
 	struct work_struct report_work;
 	struct work_struct request_scan;
 	struct work_struct beacon_update;
+	struct work_struct set_monitor;
 
 	struct tasklet_struct irq_tasklet;