Aspeed AST27xx SoCs integrate the CPTRA 1.0 secure IP, which export
an ECDSA384_SIGNATURE_VERIFY mailbox command service for SoC to use.
This patch is verified by the FIT signature verification using the
"sha384,ecdsa384" algorithm.
Signed-off-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>