Update the virtio_config.h to kernel version 5.0.
It supports more virtio flags which may be used in future
for example packed ring. Also it changed the
VIRTIO_TRANSPORT_F_END value 34 to 38.
Add the virtio_ring.h which will be used in packed ring
support.
Change-Id: If3fba1db400865eb8e09f6d2aa992b3893b65719
Signed-off-by: Jin Yu <jin.yu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/477562
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
