virtio-devices: Report events for virtio device activation and reset

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

virtio-devices/src/rng.rs

@@ -274,13 +274,16 @@ impl VirtioDevice for Rng {
 
             self.common.epoll_threads = Some(epoll_threads);
 
+            event!("virtio-device", "activated", "id", &self.id);
             return Ok(());
         }
         Err(ActivateError::BadActivate)
     }
 
     fn reset(&mut self) -> Option<Arc<dyn VirtioInterrupt>> {
-        self.common.reset()
+        let result = self.common.reset();
+        event!("virtio-device", "reset", "id", &self.id);
+        result
     }
 }