LU-8066 ldlm: move all remaining files from procfs to debugfs

LU-8066 ldlm: move all remaining files from procfs to debugfs

Move all files except stats. It will be moved later after change
type of obddev->obd_proc_entry member.

Linux-commit: 700815d47f9da0477229f009b6fa235f20da1e21

Clean up the helper functions used to implement "dump_granted_max" in
debugfs.

Change-Id: Id0a0b2c663295c7164c52f89d81525dbefbb992a
Signed-off-by: Dmitry Eremin <dmiter4ever@gmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-on: https://review.whamcloud.com/29255
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>