LU-6142 misc: Fix style issues for lustre_import.h

LU-6142 misc: Fix style issues for lustre_import.h

This patch fixes issues reported by checkpatch
for file lustre/include/lustre_import.h

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I1a1e13ed641ac65e723dd501272f7b217c1e685c
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56300
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>