The wireless extensions ioctl's implemented in mac80211 do not include
SIOCGIWTXPOWER. This patch adds the necessary code.
Acked-by: NMichael Buesch <mb@bu3sch.de>
Signed-off-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>