Use mbedtls from Crypto SP in SMMGW

Crypto SP provides hash calculation and signature verification API-s
that will be used by the uefi service in SMMGW SP.

Signed-off-by: Gabor Toth <gabor.toth2@arm.com>
Change-Id: I03e2862662734275221481784d82d8498c6f08af
5 files changed