[ALSA] oxygen: move MIDI flag to model struct

Put the flag that enables the MIDI port into the model structure instead
of passing it as a separate parameter to oxygen_pci_probe().

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index 143d83d..1e54a3c 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -181,7 +181,7 @@
 		++dev;
 		return -ENOENT;
 	}
-	err = oxygen_pci_probe(pci, index[dev], id[dev], 0, &model_hifier);
+	err = oxygen_pci_probe(pci, index[dev], id[dev], &model_hifier);
 	if (err >= 0)
 		++dev;
 	return err;