MINOR: Produce tcp-check info message for pure tcp-check rules only

This way, messages reported by protocol checks are closer that the old one.
diff --git a/include/types/checks.h b/include/types/checks.h
index d828331..2b17125 100644
--- a/include/types/checks.h
+++ b/include/types/checks.h
@@ -318,6 +318,8 @@
 #define TCPCHK_RULES_SSL3_CHK    0x00000070
 #define TCPCHK_RULES_AGENT_CHK   0x00000080
 #define TCPCHK_RULES_SPOP_CHK    0x00000090
+/* Unused 0x000000A0..0x00000F00 (reserverd for futur proto) */
+#define TCPCHK_RULES_PROTO_CHK   0x00000FF0 /* Mask to cover protocol check */
 
 /* A list of tcp-check vars, to be registered before executing a ruleset */
 struct tcpcheck_var {