Bring up wifi interface

src/freedombone-utils-wifi

     tar -xzvf $atheros_drivers_file
     reset_usb_devices
     cd $curr_dir
+    update_wifi_adaptors
+    if [ $IFACE ]; then
+        ifconfig $IFACE down
+        ifconfig $IFACE up
+    fi
 }
 
 function setup_wifi {

src/freedombone-wifi

             WIFI_INTERFACE=${1}
             wifi_interface_specified=1
             write_config_param "WIFI_INTERFACE" "$WIFI_INTERFACE"
+            ifconfig $WIFI_INTERFACE down
+            ifconfig $WIFI_INTERFACE up
             ;;
         -t|--type)
             shift
     fi
     WIFI_INTERFACE=$IFACE
     write_config_param "WIFI_INTERFACE" "$WIFI_INTERFACE"
+    ifconfig $WIFI_INTERFACE down
+    ifconfig $WIFI_INTERFACE up
 fi
 
 if [ $WIFI_DISABLE ]; then