mac80211: make cfg80211 ops and privid const

The wiphy privid (to identify wiphys) and the cfg80211
ops should both be const, so change them to be.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --cc net/mac80211/cfg.c
Simple merge

diff --cc net/mac80211/cfg.h
Simple merge

diff --cc net/mac80211/ieee80211_i.h
Simple merge

diff --cc net/mac80211/util.c
Simple merge