wifi_statistics: remove unused parameter from seq_printf

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
wifi_statistics: track bitrate per station

this is somewhat vague as beacons etc are counted too, but might
help to get a general feeling for the connection quality.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
wifi_statistics: fix type detection

APs which never send any data but only transmit management frames
might falsely be reported as adhoc nodes. The fromds/tods fields
should only be considered for dataframes, so leave the type field
untouched for management frames.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
wifi_statistics: fix squaresum calculation/prevent overflow

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
wifi_statistics: change rate unit to 100kbps instead of kbps

to prevent early overflows ...

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Merge remote branch 'upstream/master'