Signed-off-by: Michael Brown <mcb30@ipxe.org>

Virtio 1.0 introduces new constants and data structures, common to all
devices as well as specific to virtio-net.  This commit adds a subset
of these to be able to drive the virtio-net 1.0 network device.

Signed-off-by: Ladi Prosek <lprosek@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

This patch adds support for the virtio-net adapter provided by KVM.

Written by Laurent Vivier <Laurent.Vivier@bull.net> for Etherboot.
Wrapped as legacy driver for gPXE by Stefan Hajnoczi
<stefanha@gmail.com>.