cddl: fix missing ZFS library dependencies

In 9fae47666 zfsd got a libspl dependency to avoid undefined references.
However that workaround did not help external consumers of libzfs_core.

Fix all missing dependencies lld 13 and the rtld complain about.

Reviewed by: freqlabs, markj
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D32521