ProcessorPkg/PeiServicesTablePointerLibOpenSbi:

RISC-V PEI Service Table Pointer library

Implementation of RISC-V PEI Service Table Pointer library using
RISC-V OpenSbi.

Signed-off-by: Abner Chang <abner.chang@hpe.com>
Co-authored-by: Daniel Schaefer <daniel.schaefer@hpe.com>
Co-authored-by: Gilbert Chen <gilbert.chen@hpe.com>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

Cc: Leif Lindholm <leif.lindholm@linaro.org>
Cc: Gilbert Chen <gilbert.chen@hpe.com>