qemu: Support for virtio-9p-ccw

Adding the recently in qemu added 9pfs support for virtio-ccw.
Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Reviewed-by: NJason J. Herne <jjherne@us.ibm.com>
Reviewed-by: NStefan Zimmermann <stzi@linux.vnet.ibm.com>

src/qemu/qemu_command.c

@@ -4397,7 +4397,11 @@ qemuBuildFSDevStr(virDomainDefPtr def,
         goto error;
     }
 
-    virBufferAddLit(&opt, "virtio-9p-pci");
+    if (fs->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_CCW)
+        virBufferAddLit(&opt, "virtio-9p-ccw");
+    else
+        virBufferAddLit(&opt, "virtio-9p-pci");
+
     virBufferAsprintf(&opt, ",id=%s", fs->info.alias);
     virBufferAsprintf(&opt, ",fsdev=%s%s", QEMU_FSDEV_HOST_PREFIX, fs->info.alias);
     virBufferAsprintf(&opt, ",mount_tag=%s", fs->dst);