virtio-devices: Use new VirtioCommon::access_platform() accessor

Use the new virtio feature gated accessor when creating the handlers for
the virtio devices. This now means that the translations via the
accessor will only be applied if the feature is acked in accordance with
the spec.

Signed-off-by: Rob Bradford <rbradford@meta.com>

virtio-devices/src/vsock/device.rs

@@ -466,7 +466,7 @@ where
             pause_evt,
             interrupt_cb,
             backend: self.backend.clone(),
-            access_platform: self.common.access_platform.clone(),
+            access_platform: self.common.access_platform(),
         };
 
         let paused = self.common.paused.clone();