Implemented ej_wl_extent_channel() to get the extension channel
Return regular channel as control channel when in legacy mode
Report used channels on Wifi icon mouseover
bridge: make bridge address settings sticky (kernel.org commit 92c0574f11598c8036f81e27d2e8bdd6eed7d76d)

This takes care of br0 changing MAC address when starting OpenVPN with a TAP interface.
Merge remote-tracking branch 'upstream/master'