USB: musb: MAINTAINERS: Fix my tree's address

The tree is now on a new address.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

MAINTAINERS

@@ -3679,7 +3679,7 @@ F:	include/linux/isicom.h
 MUSB MULTIPOINT HIGH SPEED DUAL-ROLE CONTROLLER
 M:	Felipe Balbi <felipe.balbi@nokia.com>
 L:	linux-usb@vger.kernel.org
-T:	git git://gitorious.org/musb/mainline.git
+T:	git git://gitorious.org/usb/usb.git
 S:	Maintained
 F:	drivers/usb/musb/