crypto: arm/sha2-ce - move SHA-224/256 ARMv8 implementation to base layer

This removes all the boilerplate from the existing implementation,
and replaces it with calls into the base layer.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --cc arch/arm/crypto/Kconfig
Simple merge

diff --cc arch/arm/crypto/sha2-ce-core.S
Simple merge

diff --cc arch/arm/crypto/sha2-ce-glue.c
Simple merge