default or selected kernelversion does not have config value CONFIG_CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD.
Result is shown for kernelversion 6.16-rc7

CONFIG_CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD (not configurable)

configname: CONFIG_CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD

Linux Kernel Configuration
└─>Library routines
└─>Crypto library routines
└─>CRYPTO_ARCH_HAVE_LIB_SHA256_SIMD
In linux kernel since version 6.1.145 (release Date: 2025-07-14)  
Declares whether the architecture provides an arch-specific
accelerated implementation of the SHA-256 library interface
that is SIMD-based and therefore not usable in hardirq
context.