ensure that 'zap show channel' will indicate that the echo canceler has been...

ensure that 'zap show channel' will indicate that the echo canceler has been disabled when CED has been detected on the channel


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@15662 65c4cc65-6c06-0410-ace0-fbb531ad65f3