Separate mesh hotspot channel

src/freedombone-mesh-batman

 CELLID='any'
 
 CHANNEL=2
+HOTSPOT_CHANNEL=6
 if [ -f $COMPLETION_FILE ]; then
     if grep -q "Wifi channel:" $COMPLETION_FILE; then
         CHANNEL=$(cat $COMPLETION_FILE | grep "Wifi channel:" | awk -F ':' '{print $2}')
                 ifconfig $IFACE_SECONDARY mtu 1500
                 ifconfig $IFACE_SECONDARY hw ether $(assign_peer_address)
                 iwconfig $IFACE_SECONDARY enc open
-                iwconfig $IFACE_SECONDARY mode managed essid $HOTSPOT_NAME channel ${CHANNEL}
+                iwconfig $IFACE_SECONDARY mode managed essid $HOTSPOT_NAME channel ${HOTSPOT_CHANNEL}
                 iwconfig $IFACE_SECONDARY ap $CELLID
 
                 brctl addbr $BRIDGE_HOTSPOT
                 echo "country_code=UK" >> /etc/hostapd/hostapd.conf
                 echo "ssid=$HOTSPOT_NAME" >> /etc/hostapd/hostapd.conf
                 echo 'hw_mode=g' >> /etc/hostapd/hostapd.conf
-                echo "channel=${CHANNEL}" >> /etc/hostapd/hostapd.conf
+                echo "channel=${HOTSPOT_CHANNEL}" >> /etc/hostapd/hostapd.conf
                 echo 'wpa=2' >> /etc/hostapd/hostapd.conf
                 echo "wpa_passphrase=$HOTSPOT_PASSPHRASE" >> /etc/hostapd/hostapd.conf
                 echo 'wpa_key_mgmt=WPA-PSK' >> /etc/hostapd/hostapd.conf