topology: Add support for parsing vendor tuples

Vendor can define several tuple arrays in 'SectionVendorTuples', as
well as the reference to a vendor token list object.

A later patche will copy vendor tuples in ABI format to the private
buffer of its parent data object in the building phase.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

src/topology/elem.c

@@ -196,6 +196,10 @@ struct tplg_elem* tplg_elem_new_common(snd_tplg_t *tplg,
 	case SND_TPLG_TYPE_TOKEN:
 		list_add_tail(&elem->list, &tplg->token_list);
 		break;
+	case SND_TPLG_TYPE_TUPLE:
+		list_add_tail(&elem->list, &tplg->tuple_list);
+		elem->free = tplg_free_tuples;
+		break;
 	default:
 		free(elem);
 		return NULL;