LU-1730 obdclass: fix cfs_lockdep_set_class() typos

LU-1730 obdclass: fix cfs_lockdep_set_class() typos

During cl_object_header initialization, coh_attr_guard was mistakenly
passed to cfs_lockdep_set_class() for all three spinlocks in
cl_object_header.

Signed-off-by: Ned Bass <bass6@llnl.gov>
Change-Id: I725b4f463fc3cbf8a6a5254f910f0e35588a7969
Reviewed-on: http://review.whamcloud.com/3590
Reviewed-by: Jinshan Xiong <jinshan.xiong@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>