MAINTAINERS: Add STAGING - ECHO CANCELLER

Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

MAINTAINERS

@@ -6059,6 +6059,12 @@ M:	Manu Abraham <abraham.manu@gmail.com>
 S:	Odd Fixes
 F:	drivers/staging/crystalhd/
 
+STAGING - ECHO CANCELLER
+M:	Steve Underwood <steveu@coppice.org>
+M:	David Rowe <david@rowetel.com>
+S:	Odd Fixes
+F:	drivers/staging/echo/
+
 STARFIRE/DURALAN NETWORK DRIVER
 M:	Ion Badulescu <ionut@badula.org>
 S:	Odd Fixes