s390/MAINTAINERS: Add Halil as kvm and machine maintainer

Halil does more work in this area than I do right now. Lets add Halil.
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20181204133802.100998-1-borntraeger@de.ibm.com>
Acked-by: NHalil Pasic <pasic@linux.ibm.com>
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

MAINTAINERS

@@ -365,8 +365,9 @@ S: Maintained
 F: target/ppc/kvm.c
 
 S390
-M: Christian Borntraeger <borntraeger@de.ibm.com>
+M: Halil Pasic <pasic@linux.ibm.com>
 M: Cornelia Huck <cohuck@redhat.com>
+M: Christian Borntraeger <borntraeger@de.ibm.com>
 S: Maintained
 F: target/s390x/kvm.c
 F: target/s390x/kvm_s390x.h
@@ -1057,6 +1058,7 @@ S390 Machines
 -------------
 S390 Virtio-ccw
 M: Cornelia Huck <cohuck@redhat.com>
+M: Halil Pasic <pasic@linux.ibm.com>
 M: Christian Borntraeger <borntraeger@de.ibm.com>
 S: Supported
 F: hw/char/sclp*.[hc]