MAINTAINERS: Add entry for Native Instruments sound driver

Signed-off-by: NDaniel Mack <zonque@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

MAINTAINERS

@@ -4281,6 +4281,13 @@ M:	Tim Hockin <thockin@hockin.org>
 S:	Maintained
 F:	drivers/net/natsemi.c
 
+NATIVE INSTRUMENTS USB SOUND INTERFACE DRIVER
+M:	Daniel Mack <zonque@gmail.com>
+S:	Maintained
+L:	alsa-devel@alsa-project.org
+W:	http://www.native-instruments.com
+F:	sound/usb/caiaq/
+
 NCP FILESYSTEM
 M:	Petr Vandrovec <petr@vandrovec.name>
 S:	Odd Fixes