The typedef of "__virtio16" is introduced into Linux kernel in v3.19.
To prevent build error on old kernel, this patch replaces the
"__virtio" usage with "uint16_t".
Fixes: d7fe5a2861 ("net/ifc: support live migration")
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>