make sta_rx_agg_session_timer_expired() static

sta_rx_agg_session_timer_expired() can now become static.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

net/mac80211/ieee80211_i.h

@@ -940,7 +940,6 @@ void ieee80211_send_delba(struct net_device *dev, const u8 *da, u16 tid,
 
 void ieee80211_sta_stop_rx_ba_session(struct net_device *dev, u8 *da,
 				u16 tid, u16 initiator, u16 reason);
-void sta_rx_agg_session_timer_expired(unsigned long data);
 void sta_addba_resp_timer_expired(unsigned long data);
 void ieee80211_sta_tear_down_BA_sessions(struct net_device *dev, u8 *addr);
 u64 ieee80211_sta_get_rates(struct ieee80211_local *local,

net/mac80211/mlme.c

@@ -87,6 +87,7 @@ static int ieee80211_sta_start_scan(struct net_device *dev,
 				    u8 *ssid, size_t ssid_len);
 static int ieee80211_sta_config_auth(struct net_device *dev,
 				     struct ieee80211_if_sta *ifsta);
+static void sta_rx_agg_session_timer_expired(unsigned long data);
 
 
 void ieee802_11_parse_elems(u8 *start, size_t len,
@@ -1608,7 +1609,7 @@ void sta_addba_resp_timer_expired(unsigned long data)
  * resetting it after each frame that arrives from the originator.
  * if this timer expires ieee80211_sta_stop_rx_ba_session will be executed.
  */
-void sta_rx_agg_session_timer_expired(unsigned long data)
+static void sta_rx_agg_session_timer_expired(unsigned long data)
 {
 	/* not an elegant detour, but there is no choice as the timer passes
 	 * only one argument, and verious sta_info are needed here, so init