LU-6142 obdclass: Fix style issues for genops.c

LU-6142 obdclass: Fix style issues for genops.c

This patch fixes issues reported by checkpatch
for file lustre/obdclass/genops.c

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: Ifa8bc6e26e7dd3129e234d1d4626e28614419ddd
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54056
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>