mac80211 rate control: fix section mismatch

When the rate control algorithms are built-in, their exit
functions can be called from mac80211's init function so
they cannot be marked __exit.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/rc80211_pid_algo.c

@@ -538,7 +538,7 @@ int __init rc80211_pid_init(void)
 	return ieee80211_rate_control_register(&mac80211_rcpid);
 }
 
-void __exit rc80211_pid_exit(void)
+void rc80211_pid_exit(void)
 {
 	ieee80211_rate_control_unregister(&mac80211_rcpid);
 }

net/mac80211/rc80211_simple.c

@@ -389,7 +389,7 @@ int __init rc80211_simple_init(void)
 	return ieee80211_rate_control_register(&mac80211_rcsimple);
 }
 
-void __exit rc80211_simple_exit(void)
+void rc80211_simple_exit(void)
 {
 	ieee80211_rate_control_unregister(&mac80211_rcsimple);
 }