If for some reason statistics notification received from the firmware
reports 0 in average beacon RSSI value, then skip it and avoid signal
based decisions.
Signed-off-by: NAlexander Bondar <alexander.bondar@intel.com>
Reviewed-by: NJohannes Berg <johannes.berg@intel.com>
Signed-off-by: NEmmanuel Grumbach <emmanuel.grumbach@intel.com>