CONFIG_CRYPTO_SHA3_256_S390 is not available for the selected architecture x86.
Result is shown for architecture s390

Hash functions: SHA3-224 and SHA3-256

modulename: sha3_256_s390.ko

configname: CONFIG_CRYPTO_SHA3_256_S390

Linux Kernel Configuration
└─>Accelerated Cryptographic Algorithms for CPU (s390)
└─>Hash functions: SHA3-224 and SHA3-256
In linux kernel since version 4.14.326 (release Date: 2023-09-23)
SHA3-224 and SHA3-256 secure hash algorithms (FIPS 202)

Architecture: s390

It is available as of z14.
source code: