ALSA: hda - Expose codec type sysfs

The type field of HD-audio codec object should be exposed to
user-space so that it can identify which driver type to bind (legacy /
asoc).
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/hda/hdac_sysfs.c

@@ -36,6 +36,7 @@ static ssize_t type##_show(struct device *dev,			\
 } \
 static DEVICE_ATTR_RO(type)
 
+CODEC_ATTR(type);
 CODEC_ATTR(vendor_id);
 CODEC_ATTR(subsystem_id);
 CODEC_ATTR(revision_id);
@@ -45,6 +46,7 @@ CODEC_ATTR_STR(vendor_name);
 CODEC_ATTR_STR(chip_name);
 
 static struct attribute *hdac_dev_attrs[] = {
+	&dev_attr_type.attr,
 	&dev_attr_vendor_id.attr,
 	&dev_attr_subsystem_id.attr,
 	&dev_attr_revision_id.attr,