mac80211: log more data when tracing

Enable logging of more configuration data when tracing
is enabled. Except for the channel frequency this is
only useful with the binary trace format, but that can
be recorded and replayed with trace-cmd and I will be
working on a plugin that reports all the information.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>