[ALSA] oxygen: make SPI configuration configurable

Add a field to the model structure so that it is possible to have a card
where the SPI outputs 4 and 5 are used for an EEPROM.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/pci/oxygen/virtuoso.c b/sound/pci/oxygen/virtuoso.c
index bfd1f3c..247d5e1 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -227,6 +227,7 @@
 	.record_from_dma_b = 1,
 	.cd_in_from_video_in = 1,
 	.dac_minimum_volume = 15,
+	.function_flags = OXYGEN_FUNCTION_ENABLE_SPI_4_5,
 };
 
 static int __devinit xonar_probe(struct pci_dev *pci,