tcp: fix build issue for some cc modules

The TCP_HHOOK option was moved from opt_inet.h to opt_global.h in
https://cgit.FreeBSD.org/src/commit/?id=e68b3792440cac248347afe08ba5881a00ba6523
The corresponding changes in two Makefiles were missed, which resulted
in not building cc_cdg, cc_chd, cc_hd, and cc_vegas anymore.

Reported by: void@f-m.fm
Reviewed by: rrs, rscheff
Sponsored by: Netflix, Inc.
Differential Revision: https://reviews.freebsd.org/D41010