ALSA: hda - Introduce get_wcaps_type() macro

Add a helper macro to retrieve the widget type from wiget cap bits.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index bccb62a..b36f6c5 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -122,7 +122,7 @@
 		return -ENOMEM;
 	node->nid = nid;
 	node->wid_caps = get_wcaps(codec, nid);
-	node->type = (node->wid_caps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
+	node->type = get_wcaps_type(node->wid_caps);
 	if (node->wid_caps & AC_WCAP_CONN_LIST) {
 		nconns = snd_hda_get_connections(codec, nid, conn_list,
 						 HDA_MAX_CONNECTIONS);