btmtk_usb_id_get
err = btmtk_usb_id_get(hdev, 0x80000008, &dev_id);
err = btmtk_usb_id_get(hdev, 0x70010200, &dev_id);
err = btmtk_usb_id_get(hdev, 0x80021004, &fw_version);
err = btmtk_usb_id_get(hdev, 0x70010020, &fw_flavor);
err = btmtk_usb_id_get(hdev, 0x70010200, &val);