packets: Change IP_ARGS interface to take an ovs_be32 instead of a pointer.

An ovs_be32 is a more obvious way to represent an IP address than a
pointer to one.  It is also more type-safe, especially since "sparse" is
able to check that the argument is in network byte order.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>

lib/socket-util.c

@@ -941,7 +941,7 @@ describe_sockaddr(struct ds *string, int fd,
 
             memcpy(&sin, &ss, sizeof sin);
             ds_put_format(string, IP_FMT":%"PRIu16,
-                          IP_ARGS(&sin.sin_addr.s_addr), ntohs(sin.sin_port));
+                          IP_ARGS(sin.sin_addr.s_addr), ntohs(sin.sin_port));
         } else if (ss.ss_family == AF_UNIX) {
             struct sockaddr_un sun;
             const char *null;