Sync some patches for hns3 about PFC and RSS
- net/hns3: support new device
- app/testpmd: fix RSS algorithm choice
- net/hns3: enable PFC for all user priorities
Signed-off-by: Dengdui Huang <huangdengdui@huawei.com>
(cherry picked from commit d4966134474f40a98ddbdab4c281ef20bcc1e691)
