core: arm64: SHA-512 using ARMv8.2-A cryptographic extensions

Import SHA-512 assembly code from the Linux kernel (Linaro
contribution). Enabled with CFG_CRYPTO_SHA512_ARM64_CE=y, set by default
if C

core: arm64: SHA-512 using ARMv8.2-A cryptographic extensions

Import SHA-512 assembly code from the Linux kernel (Linaro
contribution). Enabled with CFG_CRYPTO_SHA512_ARM64_CE=y, set by default
if CFG_CRYPTO_WITH_CE82=y.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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