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
Co-author: Sudeep Dutt
Signed-off-by: Ashutosh Dixit
Signed-off-by: Caz Yokoyama
Signed-off-by: Dasaratharaman Chandramouli
Signed-off-by: Nikhil Rao
Signed-off-by: Harshavardhan R Kharche
Signed-off-by: Sudeep Dutt
Acked-by: Yaozu (Eddie) Dong
Signed-off-by: Greg Kroah-Hartman