UBIFS: print less

UBIFS currently prints a lot of information when it mounts a volume, which
bothers some people. Make it less chatty - print only important information
by default.

Get rid of 'dbg_msg()' macro completely.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/fs/ubifs/tnc_misc.c b/fs/ubifs/tnc_misc.c
index d38ac7f..f6bf899 100644
--- a/fs/ubifs/tnc_misc.c
+++ b/fs/ubifs/tnc_misc.c
@@ -328,8 +328,8 @@
 		case UBIFS_XENT_KEY:
 			break;
 		default:
-			dbg_msg("bad key type at slot %d: %d",
-				i, key_type(c, &zbr->key));
+			ubifs_err("bad key type at slot %d: %d",
+				  i, key_type(c, &zbr->key));
 			err = 3;
 			goto out_dump;
 		}