LU-6142 llite: Fix style issues for file.c

LU-6142 llite: Fix style issues for file.c

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

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: I66d7a4adfad48d6de26be8d009f004efb90b6d23
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54139
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>