MAINTAINERS: Add missing entries to the vhost section

Signed-off-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Message-Id: <20181125205000.10324-15-philmd@redhat.com>
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>

MAINTAINERS

@@ -1382,6 +1382,7 @@ M: Michael S. Tsirkin <mst@redhat.com>
 S: Supported
 F: hw/*/*vhost*
 F: docs/interop/vhost-user.txt
+F: contrib/vhost-user-*/
 
 virtio
 M: Michael S. Tsirkin <mst@redhat.com>