As Vhost will be a library in DPDK 1.8, adding a new section to
Programmer's Guide to describe its use.
Signed-off-by: Siobhan Butler <siobhan.a.butler@intel.com>
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
Acked-by: Bernard Iremonger <bernard.iremonger@intel.com>
