Sync some bugfix from upstreaming about testpmd and doc, modifies
are as follow:
- support set RSS hash algorithm
- ethdev: add new API to get RSS hash algorithm by name
- doc: fix description of RSS features
- doc: fix RSS flow description in hns3 guide
- doc: update features in hns3 guide
- doc: fix hns3 build option about max queue number
- app/testpmd: check port and queue Rx/Tx offloads
- app/testpmd: fix Tx offload command
- app/testpmd: allow offload config for all ports
- app/testpmd: fix tunnel TSO configuration
- app/testpmd: add explicit check for tunnel TSO
- app/testpmd: fix tunnel TSO capability check
- app/testpmd: remove useless check in TSO command
Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
