sound: virtuoso: add Xonar DS support

Add experimental support for the Asus Xonar DS.

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 6accaf9..563b6f5 100644
--- a/sound/pci/oxygen/virtuoso.c
+++ b/sound/pci/oxygen/virtuoso.c
@@ -49,6 +49,7 @@
 	{ OXYGEN_PCI_SUBID(0x1043, 0x834f) },
 	{ OXYGEN_PCI_SUBID(0x1043, 0x835c) },
 	{ OXYGEN_PCI_SUBID(0x1043, 0x835d) },
+	{ OXYGEN_PCI_SUBID(0x1043, 0x838e) },
 	{ OXYGEN_PCI_SUBID_BROKEN_EEPROM },
 	{ }
 };
@@ -61,6 +62,8 @@
 		return 0;
 	if (get_xonar_cs43xx_model(chip, id) >= 0)
 		return 0;
+	if (get_xonar_wm87x6_model(chip, id) >= 0)
+		return 0;
 	return -EINVAL;
 }