helpers.conf: support also tcp in the CT sip helper

Signed-off-by: Pierre Lebleu <pme.lebleu@gmail.com>

helpers.conf

@@ -67,7 +67,7 @@ config helper
 	option description 'SIP VoIP connection tracking'
 	option module 'nf_conntrack_sip'
 	option family 'any'
-	option proto 'udp'
+	option proto 'tcpudp'
 	option port '5060'
 
 config helper