[Virt] StratoVirt ReadMe文档修改和设备模块中冗余的DeviceOps删除

Attachments:

• attachment.htm (text/html — 1.8 KB)
• 0001-docs-update-design.md.patch (application/octet-stream — 5.5 KB)
• 0002-doc-add-Chinese-version-of-design.patch (application/octet-stream — 2.7 KB)
• 0003-device_model-remove-the-trait-of-DeviceOps-in-mmio-m.patch (application/octet-stream — 3.3 KB)