[ALSA] Suppress error message

HDA Codec driver
Suppressing the error message regarding no AFG.
This is often harmless (e.g. probing a modem codec).
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/hda_codec.c

@@ -509,7 +509,7 @@ int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
 	/* FIXME: support for multiple AFGs? */
 	codec->afg = look_for_afg_node(codec);
 	if (! codec->afg) {
-		snd_printk(KERN_ERR "hda_codec: no AFG node found\n");
+		snd_printdd("hda_codec: no AFG node found\n");
 		snd_hda_codec_free(codec);
 		return -ENODEV;
 	}