ALSA: dice: use stream formats to add MIDI substreams

		.close		= midi_close,

		.trigger	= midi_playback_trigger,

	};

	__be32 reg;

	struct snd_rawmidi *rmidi;

	struct snd_rawmidi_str *str;

	unsigned int midi_in_ports, midi_out_ports;

	int i;

	int err;

	/*

	 * Use the number of MIDI conformant data channel at current sampling

	 * transfer frequency.

	 */

	err = snd_dice_transaction_read_tx(dice, TX_NUMBER_MIDI,

					   &reg, sizeof(reg));

	if (err < 0)

		return err;

	midi_in_ports = be32_to_cpu(reg);

	err = snd_dice_transaction_read_rx(dice, RX_NUMBER_MIDI,

					   &reg, sizeof(reg));

	if (err < 0)

		return err;

	midi_out_ports = be32_to_cpu(reg);

	midi_in_ports = 0;

	midi_out_ports = 0;

	for (i = 0; i < MAX_STREAMS; ++i) {

		midi_in_ports = max(midi_in_ports, dice->tx_midi_ports[i]);

		midi_out_ports = max(midi_out_ports, dice->rx_midi_ports[i]);

	}

	if (midi_in_ports + midi_out_ports == 0)

		return 0;