MAINTAINERS/vfio-ccw: add Farhan and Eric, make Halil Reviewer

Eric and Farhan will help with maintaining vfio-ccw.

Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Halil Pasic <pasic@linux.ibm.com>
Cc: Farhan Ali <alifm@linux.ibm.com>
Cc: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Message-Id: <20181212145929.136522-1-borntraeger@de.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Acked-by: Farhan Ali <alifm@linux.ibm.com>
Acked-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

MAINTAINERS

@@ -13021,7 +13021,9 @@ F:	drivers/pci/hotplug/s390_pci_hpc.c
 
 S390 VFIO-CCW DRIVER
 M:	Cornelia Huck <cohuck@redhat.com>
-M:	Halil Pasic <pasic@linux.ibm.com>
+M:	Farhan Ali <alifm@linux.ibm.com>
+M:	Eric Farman <farman@linux.ibm.com>
+R:	Halil Pasic <pasic@linux.ibm.com>
 L:	linux-s390@vger.kernel.org
 L:	kvm@vger.kernel.org
 S:	Supported