ALSA: oxygen: configure MIDI via device_config

To enable the MIDI port, model drivers must now set flags in
device_config, not only in misc_flags.  This allows model drivers to
enable the UART without creating an ALSA MIDI device.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index f416e68..befada7 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -569,7 +569,9 @@
 	.device_config = PLAYBACK_0_TO_I2S |
 			 PLAYBACK_1_TO_SPDIF |
 			 CAPTURE_0_FROM_I2S_2 |
-			 CAPTURE_1_FROM_SPDIF,
+			 CAPTURE_1_FROM_SPDIF |
+			 MIDI_OUTPUT |
+			 MIDI_INPUT,
 	.dac_channels = 8,
 	.dac_volume_min = 0x0f,
 	.dac_volume_max = 0xff,