[dpdk-dev] Huawei hns3 Roadmap and DMA engine for DPDK 21.11 release

[Min Hu (Connor)]

The following is Huawei hns3 PMD and DMA engine roadmap for DPDK 21.11 
release:

* Support Tx prepare for bonding
* Support multi-process for testpmd
* Support DMA device framework
* Support DMA engine for Kunpeng 920
* Support refactor for hns3 PMD
* Support performance optimization for hns3 PMD