UPSTREAM: VSOCK: Add Makefile and Kconfig

Enable virtio-vsock and vhost-vsock.

Signed-off-by: Asias He <asias@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

(cherry picked from commit 304ba62fd4e670c1a5784585da0fac9f7309ef6c)

BUG=chromium:763970
TEST=build caroline with USE=kvm_host

Change-Id: Ib20fda8f1de1b954c811a99f933902bc65796552
Signed-off-by: Chirantan Ekbote <chirantan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/483927
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1058944
Reviewed-by: Guenter Roeck <groeck@chromium.org>
4 files changed