solaris: libafs depends on fs/ufs

solaris: libafs depends on fs/ufs

The solaris afs module depends on symbols exported by fs/ufs.
Set this dependency in the afs module so the kernel loader
will automatically load the fs/ufs driver if is not already
loaded, such on zfs only systems.

Reviewed-on: http://gerrit.openafs.org/5456
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit 0cb10104f5af73614e6b7673d3711ddbc3f3a866)

Change-Id: Ifcb5e2725bbd2de44218109aac9c20439dadf41e
Reviewed-on: http://gerrit.openafs.org/6315
Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>