iwlagn: downgrade warning on unknown TLV

If we maintain API properly, then there isn't
really a reason to warn about this since we'll
just be adding things that are safe to ignore,
so downgrade the warning to debug info level.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -1481,7 +1481,7 @@ static int iwlagn_load_firmware(struct iwl_priv *priv,
 					le32_to_cpup((__le32 *)tlv_data);
 			break;
 		default:
-			IWL_WARN(priv, "unknown TLV: %d\n", tlv_type);
+			IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
 			break;
 		}
 	}