Add permission for VFIO device binding

vfio_handler will bind platform devices to VFIO driver, and then
return a file descriptor containing DTBO. This change adds
permissions needed for that.

Bug: 278008182
Test: adb shell /apex/com.android.virt/bin/vm run-microdroid \
      --devices /sys/bus/platform/devices/16d00000.eh --protected
Change-Id: Ie947adff00d138426d4703cbb8e7a8cd429c2272
diff --git a/private/service.te b/private/service.te
index f07400b..ccb9e17 100644
--- a/private/service.te
+++ b/private/service.te
@@ -21,4 +21,5 @@
 type statsmanager_service,          system_api_service, system_server_service, service_manager_type;
 type tracingproxy_service,          system_server_service, service_manager_type;
 type transparency_service,          system_server_service, service_manager_type;
+type vfio_handler_service,          service_manager_type;
 type uce_service,                   service_manager_type;