UBIFS: rename dumping functions

This commit re-names all functions which dump something from "dbg_dump_*()" to
"ubifs_dump_*()". This is done for consistency with UBI and because this way it
will be more logical once we remove the debugging sompilation option.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>

fs/ubifs/sb.c

@@ -475,7 +475,7 @@ static int validate_sb(struct ubifs_info *c, struct ubifs_sb_node *sup)
 
 failed:
 	ubifs_err("bad superblock, error %d", err);
-	dbg_dump_node(c, sup);
+	ubifs_dump_node(c, sup);
 	return -EINVAL;
 }