iwl3945: disable power save

we see from http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2125
that power saving does not work well on 3945. Since then power saving has
also been connected with association problems where an AP deathenticates a
3945 after it is unable to transmit data to it - this happens when 3945
enters power savings mode.

Disable power save support until issues are resolved.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
CC: stable@kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-3945.c

@@ -2835,6 +2835,7 @@ static struct iwl_cfg iwl3945_bg_cfg = {
 	.use_isr_legacy = true,
 	.ht_greenfield_support = false,
 	.led_compensation = 64,
+	.broken_powersave = true,
 };
 
 static struct iwl_cfg iwl3945_abg_cfg = {
@@ -2851,6 +2852,7 @@ static struct iwl_cfg iwl3945_abg_cfg = {
 	.use_isr_legacy = true,
 	.ht_greenfield_support = false,
 	.led_compensation = 64,
+	.broken_powersave = true,
 };
 
 struct pci_device_id iwl3945_hw_card_ids[] = {