Save CW state to uci so that it persists across reboot

Signed-off-by: Grzegorz Sluja <grzegorz.sluja@iopsys.eu>

net/asterisk/files/iopsys/lib/voice/cw.sh

@@ -5,6 +5,8 @@
 if [ $2 != '?' ]; then
     for tel_line in `uci show $VOICE_UCI_CONFIG | grep telline | grep $1 | cut -d . -f 2`; do
 	sed -i "/\[$tel_line\]/,/^\[/ s/\(callwaiting=\)[0-9]/\1$2/" $ASTERISK_CONF_DIR/chan_telephony.conf
+	uci set asterisk.$tel_line.callwaiting_enabled="$2"
+	uci commit asterisk
     done
 else
     for tel_line in `uci show $VOICE_UCI_CONFIG | grep telline | grep $1 | cut -d . -f 2`; do