ceph: add newline to end of debug message format

Some of dout format do not include newline in the end,
fix for the files which are in fs/ceph and net/ceph directories,
and changing printk to dout for printing debug info in super.c

Signed-off-by: Chengguang Xu <cgxu519@icloud.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index f1d9c6c..b7771e9 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -451,7 +451,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
 				fi->dir_ordered_count = req->r_dir_ordered_cnt;
 			}
 		} else {
-			dout("readdir !did_prepopulate");
+			dout("readdir !did_prepopulate\n");
 			/* disable readdir cache */
 			fi->readdir_cache_idx = -1;
 			/* preclude from marking dir complete */