LU-10788 llite: pass flags through __vfs_setxattr()

LU-10788 llite: pass flags through __vfs_setxattr()

In the compat definition of __vfs_setxattr() pass the flags we
received down to the handler. For consistency with upstream return
-EOPNOTSUPP if no handler could be found.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I78b88d1521dd000e328f1add1a6159c70d16f5a7
Reviewed-on: https://review.whamcloud.com/31593
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>