cfg80211: change wiphy_to_dev function name

Name wiphy_to_rdev is more accurate to describe what the function
does, i.e., return a pointer pointing to struct
cfg80211_registered_device.

Signed-off-by: Zhao, Gang <gamerh2o@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --cc net/wireless/chan.c
Simple merge

diff --cc net/wireless/core.c
Simple merge

diff --cc net/wireless/core.h
Simple merge

diff --cc net/wireless/ethtool.c
Simple merge

diff --cc net/wireless/ibss.c
Simple merge

diff --cc net/wireless/mlme.c
Simple merge

diff --cc net/wireless/nl80211.c
Simple merge

diff --cc net/wireless/scan.c
Simple merge

diff --cc net/wireless/sme.c
Simple merge

diff --cc net/wireless/util.c
Simple merge

diff --cc net/wireless/wext-compat.c
Simple merge

diff --cc net/wireless/wext-sme.c
Simple merge