4018 mpt_sas: allow physical topology enumeration in libtopo 4019 mpt_sas: expose LED controls to libtopo Reviewed by: Keith Wesolowski <keith.wesolowski@joyent.com> Reviewed by: Hans Rosenfeld <hans.rosenfeld@nexenta.com> Reviewed by: Albert Lee <trisk@nexenta.com> Approved by: Albert Lee <trisk@nexenta.com>