dccp: small build fix

@@ -554,10 +554,11 @@
 file path=usr/include/net/vjcompress.h
 file path=usr/include/netconfig.h
 file path=usr/include/netdb.h
 file path=usr/include/netdir.h
 file path=usr/include/netinet/arp.h
+file path=usr/include/netinet/dccp.h
 file path=usr/include/netinet/dhcp.h
 file path=usr/include/netinet/dhcp6.h
 file path=usr/include/netinet/icmp6.h
 file path=usr/include/netinet/icmp_var.h
 file path=usr/include/netinet/if_ether.h