The local maximum transmit power for a channel is defined as the maximum
regulatory transmission power minus the local power constraint specified
for the channel in the Power Constraint element. (7.3.2.15 IEEE80211 2007)
Signed-off-by: NHong Wu <hong.wu@dspg.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>