ALSA: snd-usb-caiaq: Add support for Traktor Audio 2

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/Kconfig b/sound/usb/Kconfig
index 0fefdb4..97724d8 100644
--- a/sound/usb/Kconfig
+++ b/sound/usb/Kconfig
@@ -62,6 +62,7 @@
 	    * Native Instruments Audio 2 DJ
 	    * Native Instruments Audio 4 DJ
 	    * Native Instruments Audio 8 DJ
+	    * Native Instruments Traktor Audio 2
 	    * Native Instruments Guitar Rig Session I/O
 	    * Native Instruments Guitar Rig mobile
 	    * Native Instruments Traktor Kontrol X1