ALSA: hda - Add standard channel maps

Although HD-audio allows pair-wise channel configurations, only the
fixed channel positions are used in this version.  In future, this can
be changed and allow user to modify the channel positions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 8fd9f636..ed3de8d 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -776,6 +776,7 @@
 	unsigned int pcm_type;	/* HDA_PCM_TYPE_XXX */
 	int device;		/* device number to assign */
 	struct snd_pcm *pcm;	/* assigned PCM instance */
+	bool own_chmap;		/* codec driver provides own channel maps */
 };
 
 /* codec information */