cfg80211: change registered device pointer name

Name "dev" is too common and ambiguous, let all the pointer name
pointing to struct cfg80211_registered_device be "rdev". This can
improve code readability and consistency(since other places have
already called it rdev).

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 5bee6cc..c65f4a9 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -251,8 +251,8 @@
 
 void ieee80211_set_bitrate_flags(struct wiphy *wiphy);
 
-void cfg80211_bss_expire(struct cfg80211_registered_device *dev);
-void cfg80211_bss_age(struct cfg80211_registered_device *dev,
+void cfg80211_bss_expire(struct cfg80211_registered_device *rdev);
+void cfg80211_bss_age(struct cfg80211_registered_device *rdev,
                       unsigned long age_secs);
 
 /* IBSS */