LockD: pass service to per-net up and down functions

commit 4db77695bf5738bdafa83d1b58b64cbecc6f55e7 upstream.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>