Set HT caps in config_sta

Configure HW with correct high throughput capabilities in config_sta.

Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
Remove redundant parameters from config_sta

vif and sta already contains bssid address and address
of the station that is trying to connect to bss.

Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>
Back off if ring buffer is full

Signed-off-by: Eugene Krasnikov <k.eugene.e@gmail.com>