iwlwifi: move rate registration to module load

Having rate registration during module load enables the use of
error checking as well as reliable registration/unregistration
pairing. Previously this was not possible as rate registration
was done during _probe where _probe could be run for more than
one device on the system.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-rs.h b/drivers/net/wireless/iwlwifi/iwl-3945-rs.h
index e88b1d3..f085d33 100644
--- a/drivers/net/wireless/iwlwifi/iwl-3945-rs.h
+++ b/drivers/net/wireless/iwlwifi/iwl-3945-rs.h
@@ -202,7 +202,7 @@
  * ieee80211_register_hw
  *
  */
-extern void iwl3945_rate_control_register(struct ieee80211_hw *hw);
+extern int iwl3945_rate_control_register(void);
 
 /**
  * iwl3945_rate_control_unregister - Unregister the rate control callbacks
@@ -210,6 +210,6 @@
  * This should be called after calling ieee80211_unregister_hw, but before
  * the driver is unloaded.
  */
-extern void iwl3945_rate_control_unregister(struct ieee80211_hw *hw);
+extern void iwl3945_rate_control_unregister(void);
 
 #endif