Whether the device is currently bound to the vfio-pci driver, which is required for VM passthrough.
- true: Device is bound to vfio-pci and ready for (or currently in use by) a VM. The device's native driver has been unloaded.
- false: Device is using its native driver (e.g., nvidia) or no driver. Hypeman will automatically bind to vfio-pci when attaching to an instance.