About adding a new device type virtio-nvme

[侯英乐 <houyingle@sudoinfotech.com>]

hi all，

As we know, nvme has more features than virtio-blk. For example, with the development of virtualization IO offloading to hardware, virtio-blk and NVME-OF offloading to hardware are developing rapidly.  So if virtio and nvme are combined into Virtio-NvMe, Is it necessary to add a device type Virtio-NvMe ?