[PATCH] libertas: implement SSID scanning for SIOCSIWSCAN

[Holger Schurig]

> 1) I don't think scan_ssid_len gets cleared in enough places.

lbs_scan_networks() is now static. This makes it easy to verify
that all code paths that call lbs_scan_networks() directly or 
throught queue_delayed_work(..., &priv->scan_work, ...) 
initialize scan_ssid_len.


> 2) might as well kill the filtered scan stuff in
> lbs_scan_networks().

Done.


> 3) Add
>
>         range->scan_capa = IW_SCAN_CAPA_ESSID;

Done.


I'm sending the new version ASAP :-)