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>
diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c
index 4b62998..b6db389 100644
--- a/fs/ubifs/lpt.c
+++ b/fs/ubifs/lpt.c
@@ -1312,7 +1312,7 @@
 
 out:
 	ubifs_err("error %d reading pnode at %d:%d", err, lnum, offs);
-	dbg_dump_pnode(c, pnode, parent, iip);
+	ubifs_dump_pnode(c, pnode, parent, iip);
 	dump_stack();
 	dbg_msg("calc num: %d", calc_pnode_num_from_parent(c, parent, iip));
 	kfree(pnode);