——— libusb binding initialization ———
USB::Setting#bAlternateSetting
USB::Setting#bDescriptorType
USB::Setting#bInterfaceClass
USB::Setting#bInterfaceNumber
USB::Setting#bInterfaceProtocol
USB::Setting#bInterfaceSubClass
USB::Setting#bLength
USB::Setting#bNumEndpoints
USB::Setting#endpoints
USB::Setting#iInterface
USB::Interface#interface
USB::Setting#revoked?
[Validate]