drivers/watchdog: Add paravirtualized virtio-watchdog#3

rbradford merged 1 commit intocloud-hypervisor:virtio-fs-virtio-iommu-5.8-rc4cloud-hypervisor/linux:virtio-fs-virtio-iommu-5.8-rc4from

rbradford:2020-09-22-virtio-watchdogrbradford/linux:2020-09-22-virtio-watchdogCopy head branch name to clipboard