Balance DPADD against LDADD for dpv(1,3).

Thanks to:	ngie
MFC after:	21 days
X-MFC-to:	stable/10 stable/9
X-MFC-with:	274116 274120 274121 274123 274144


git-svn-id: svn+ssh://svn.freebsd.org/base/head@274146 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f