security(7): security.bsd.see*: Be more accurate

Reviewed by: mhorne, pauamma_gundo.com
MFC after: 2 weeks
Sponsored by: Kumacom SAS
Differential Revision: https://reviews.freebsd.org/D41108

(cherry picked from commit 61b6e00bee1d39e9c688e728fbf3a4efcdb61e66)