wireless: fix several minor description typos

drivers/net/wireless/ath/ath5k/eeprom.c

drivers/net/wireless/ath/ath9k/hw.h

drivers/net/wireless/iwmc3200wifi/hal.c

drivers/net/wireless/libertas/scan.c

drivers/net/wireless/orinoco/hermes_dld.c

drivers/net/wireless/rt2x00/rt2x00dev.c

drivers/net/wireless/zd1211rw/zd_mac.c

drivers/net/wireless/zd1211rw/zd_usb.c

include/linux/nl80211.h

include/net/cfg80211.h

net/mac80211/mlme.c

net/mac80211/status.c

net/mac80211/work.c