* @set_addr: Set the device's MAC address. May be null if not supported.
* @get_name: Get the device's name.
* @get_addr: Get the device's MAC address.
* @get_config: Get the device's configuration.
* @get_kobj: Get the kobj associated with the device (may return null).
* @set_addr: Set the device's MAC address. May be null if not supported.
* @get_name: Get the device's name.
* @get_addr: Get the device's MAC address.
* @get_config: Get the device's configuration.
* @get_kobj: Get the kobj associated with the device (may return null).