[arm64] Improve support for the Huawei TaiShan server platform
Closes: #930554
Enable the HNS/ROCE Infiniband driver
Backport fixes from 4.20 and 4.21 for HNS3 networking, hisi_sas SAS and HNS/ROCE Infiniband
Signed-off-by: Steve McIntyre 93sam@debian.org