LU-9183 llite: handle removal the offset argument of direct_IO

LU-9183 llite: handle removal the offset argument of direct_IO

In commit c8b8e32d700fe943a935e435ae251364d016c497 the offset
argument for ->direct_IO() was removed.

Change-Id: I9f1cd5862dfcb40ad6b43b9da3072a852c550c49
Signed-off-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-on: https://review.whamcloud.com/25822
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>