port: FreeBSD port update

Final update for FreeBSD inclusion at -
   https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192420

Passes

> make check-plist
> make stage-qa
> poudriere testport -o sysutils/cmockery2 -j cmockery2
> poudriere bulk -C -t -j cmockery2 sysutils/cmockery2