wireless: remove cfg80211_reg_mutex

This mutex is wrong, we use cfg80211_drv_mutex (which should
possibly be renamed to just cfg80211_mutex) everywhere except
in one place, fix that and get rid of the extra mutex.

Also get rid of a spurious regulatory_requests list definition.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 5031db7..72825af 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -301,13 +301,11 @@
 	/* check and set up bitrates */
 	ieee80211_set_bitrate_flags(wiphy);
 
-	/* set up regulatory info */
-	mutex_lock(&cfg80211_reg_mutex);
-	wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
-	mutex_unlock(&cfg80211_reg_mutex);
-
 	mutex_lock(&cfg80211_drv_mutex);
 
+	/* set up regulatory info */
+	wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
+
 	res = device_add(&drv->wiphy.dev);
 	if (res)
 		goto out_unlock;