MAINTAINERS: add myself as maintainer of xen-netback

Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/MAINTAINERS b/MAINTAINERS
index e61c2e8..3c441ce 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9366,6 +9366,7 @@
 
 XEN NETWORK BACKEND DRIVER
 M:	Ian Campbell <ian.campbell@citrix.com>
+M:	Wei Liu <wei.liu2@citrix.com>
 L:	xen-devel@lists.xenproject.org (moderated for non-subscribers)
 L:	netdev@vger.kernel.org
 S:	Supported