iordan iordanov authored Dec 23, 2021 and Frediano Ziglio committed Jan 28, 2022

by passing an open file descriptor in order to support the modern
Android USB device permissioning scheme.

During the process, a handle obtained by a call to
libusb_wrap_sys_device() is stored in the SpiceUsbDevice instance.

A call to libusb_open() is skipped if there is already a handle
present in the SpiceUsbDevice instance.

Finally, on Android, the option LIBUSB_OPTION_NO_DEVICE_DISCOVERY
must be set prior to the call to libusb_init() as per libusb
documentation.

Acked-by: Frediano Ziglio <freddy77@gmail.com>