LU-6142 lnet: Fix style issues for timer.c

LU-6142 lnet: Fix style issues for timer.c

This patch fixes issues reported by checkpatch
for file lnet/selftest/timer.c

Test-Parameters: trivial testlist=sanity-lnet
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: Ia672f0800389fc5fb1c323919b9345faba1b0347
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55447
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>