CONFIG_CRYPTO_SM4_ARM64_NEON_BLK is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

SM4 in ECB/CBC/CFB/CTR modes using NEON instructions

modulename: sm4-neon.ko

configname: CONFIG_CRYPTO_SM4_ARM64_NEON_BLK

Linux Kernel Configuration
└─>ARM64 Accelerated Cryptographic Algorithms
└─>SM4 in ECB/CBC/CFB/CTR modes using NEON instructions
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
source code:
/arch/arm64/crypto/