Chips/Hisilicon: add sas protocol

PlatformSasProtocol is added for init sas device as well as
transferring controller base address.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
4 files changed