staging/lustre/obdclass: Prepare for procfs to sysfs migration

Add necessary plumbing to register obd types and instances
under /sys/fs/lustre

Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 files changed