devices, vmm: Move Ioapic to new restore design

Moving the Ioapic object to the new restore design, meaning the Ioapic
is created directly with the right state, and it shares the same
codepath as when it's created from scratch.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>

vmm/src/device_manager.rs

@@ -1408,6 +1408,8 @@ impl DeviceManager {
                 id.clone(),
                 APIC_START,
                 Arc::clone(&self.msi_interrupt_manager),
+                versioned_state_from_id(self.snapshot.as_ref(), id.as_str())
+                    .map_err(DeviceManagerError::RestoreGetState)?,
             )
             .map_err(DeviceManagerError::CreateInterruptController)?,
         ));