iwlwifi: virtualize op_mode's fw_error

Export it as "nic_error" notification, the error handling will be in
the op_mode.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 28fda18..a0346ed 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -1390,6 +1390,7 @@
 	.queue_not_full = iwl_wake_sw_queue,
 	.hw_rf_kill = iwl_set_hw_rfkill_state,
 	.free_skb = iwl_free_skb,
+	.nic_error = iwl_nic_error,
 };
 
 /*****************************************************************************