CONFIG_CRYPTO_SHA2_ARM_CE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)

modulename: sha2-arm-ce.ko

configname: CONFIG_CRYPTO_SHA2_ARM_CE

Linux Kernel Configuration
└─>ARM Accelerated Cryptographic Algorithms
└─>SHA-224/256 digest algorithm (ARM v8 Crypto Extensions)
In linux kernel since version 3.10 (release Date: 2013-06-30)  
SHA-256 secure hash standard (DFIPS 180-2) implemented
using special ARMv8 Crypto Extensions.

source code:
/arch/arm/crypto/