net/9p/client.c: add missing '\n' at the end of p9_debug()

In p9_client_getattr_dotl(), we should add '\n' at the end of printing
log.

Link: http://lkml.kernel.org/r/5B44589A.50302@huawei.com
Signed-off-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Yiwen Jiang <jiangyiwen@huawei.com>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominique Martinet <dominique.martinet@cea.fr>

net/9p/client.c

@@ -1790,7 +1790,7 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid,
 		"<<< st_mtime_sec=%lld st_mtime_nsec=%lld\n"
 		"<<< st_ctime_sec=%lld st_ctime_nsec=%lld\n"
 		"<<< st_btime_sec=%lld st_btime_nsec=%lld\n"
-		"<<< st_gen=%lld st_data_version=%lld",
+		"<<< st_gen=%lld st_data_version=%lld\n",
 		ret->st_result_mask, ret->qid.type, ret->qid.path,
 		ret->qid.version, ret->st_mode, ret->st_nlink,
 		from_kuid(&init_user_ns, ret->st_uid),