Enable libblkio block drivers

RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
RH-MergeRequest: 172: Enable libblkio block drivers
RH-Bugzilla: 2213317
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
RH-Commit: [1/1] 3ce34afe

 (stefanha/centos-stream-qemu-kvm)

The following libblkio block drivers are available in QEMU:
- virtio-blk-vdpa-blk
- virtio-blk-vfio-pci
- virtio-blk-vhost-user
- io_uring
- nvme-io_uring

The virtio-blk-vdpa-blk and virtio-blk-vhost-user block drivers will
receive the most use, in vDPA and qemu-storage-daemon use cases,
respectively.

The virtio-blk-vfio-pci, io_uring, and nvme-io_uring block drivers are
useful for performance benchmarking and troubleshooting.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>