CONFIG_CRYPTO_SHA2_ARM64_CE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

SHA-224/SHA-256 digest algorithm (ARMv8 Crypto Extensions)

modulename: sha2-ce.ko

configname: CONFIG_CRYPTO_SHA2_ARM64_CE

Linux Kernel Configuration
└─>ARM64 Accelerated Cryptographic Algorithms
└─>SHA-224/SHA-256 digest algorithm (ARMv8 Crypto Extensions)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
/arch/arm64/crypto/