ALSA: preliminary support for Toshiba SB-0500

The Toshiba Multimedia Center SB-0500 is a rebranded version of the
Creative Technology SB Live! 24-bit External: it shares the same chipset
and only has minor cosmetic differences. Remote controller works with
alsa_usb module, basic audio is there and mixer controls are mostly
untested.

Signed-off-by: Andrea Borgia <andrea@borgia.bo.it>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/usbmixer_maps.c b/sound/usb/usbmixer_maps.c
index d755be0..f41214f 100644
--- a/sound/usb/usbmixer_maps.c
+++ b/sound/usb/usbmixer_maps.c
@@ -285,6 +285,11 @@
 		.map = live24ext_map,
 	},
 	{
+		.id = USB_ID(0x041e, 0x3048),
+		.map = audigy2nx_map,
+		.selector_map = audigy2nx_selectors,
+	},
+	{
 		/* Hercules DJ Console (Windows Edition) */
 		.id = USB_ID(0x06f8, 0xb000),
 		.ignore_ctl_error = 1,