Move the config size calculation from virtio_net_init() to
virtio_common_init() so that all virtio devices can benefit. This requires
that the host_features be passed to virtio_common_init(), and the size of
the config struct will be calculated based on which feature bits are
enabled. This calculat
Move the config size calculation from virtio_net_init() to
virtio_common_init() so that all virtio devices can benefit. This requires
that the host_features be passed to virtio_common_init(), and the size of
the config struct will be calculated based on which feature bits are
enabled. This calculat
