Aspeed AST27xx SoCs integrate the CPTRA 1.0 secure IP, which
export a SHA accelerator interface for SoC to use.
Note that CPTRA 1.0 supports only SHA384 and SHA512 and this
patch is verified by the 'hash test sha384/sha512' commands.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>