fs/locks: remove unnecessary white space.

 - spaces before tabs,
 - spaces at the end of lines,
 - multiple blank lines,
 - blank lines before EXPORT_SYMBOL,
can all go.

Signed-off-by: NeilBrown <neilb@suse.com>
Reviewed-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>