LU-6142 util: Fix style issues for l_ioctl.c

LU-6142 util: Fix style issues for l_ioctl.c

This patch fixes issues reported by checkpatch
for file libcfs/libcfs/util/l_ioctl.c

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Change-Id: I75a8dad667e62bf128af79d64f0ce001ffc9f12c
Reviewed-on: https://review.whamcloud.com/35382
Tested-by: jenkins <devops@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Shaun Tancheff <stancheff@cray.com>