Vhost sample app documentation describes parameters that are not in the
code and omits parameters that exist.
Also switching the order of sections on running vhost and VM,
since the --client parameter in the sample line
requires a socket to be created by VM.
Removing uio references and updating with vfio-pci.
Signed-off-by: Herakliusz Lipiec <herakliusz.lipiec@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>