iwlwifi: add context pointer to station

Sometimes we only pass around station
pointers but need to find the context
they belong to, so store it in there.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index 2f9d1da..9364768 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -502,6 +502,7 @@
 };
 
 struct iwl_station_priv_common {
+	struct iwl_rxon_context *ctx;
 	u8 sta_id;
 };