This patch introduces a sample user space daemon which
implements the virtio device backends on the host. The daemon
creates/removes/configures virtio device backends by communicating with
the Intel MIC Host Driver. The virtio devices currently supported are
virtio net, virtio console and virtio block. Virtio net supports TSO/GSO.
The daemon also monitors card shutdown status and takes appropriate actions
like killing the virtio backends and resetting the card upon card shutdown
and crashes.

Co-author: Ashutosh Dixit <ashutosh.dixit@intel.com>
Co-author: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: NCaz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: NDasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: NNikhil Rao <nikhil.rao@intel.com>
Signed-off-by: NHarshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: NSudeep Dutt <sudeep.dutt@intel.com>
Acked-by: NYaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>