MAINTAINERS: s390/virtio-ccw: drop Christian, add Halil

Halil does all the work anyway.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <1540827745-20795-3-git-send-email-borntraeger@de.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 2909cd0..5b6f4a2 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1263,7 +1263,7 @@
 
 virtio-ccw
 M: Cornelia Huck <cohuck@redhat.com>
-M: Christian Borntraeger <borntraeger@de.ibm.com>
+M: Halil Pasic <pasic@linux.ibm.com>
 S: Supported
 F: hw/s390x/virtio-ccw*.[hc]
 F: hw/s390x/vhost-vsock-ccw.c