CONFIG_CRYPTO_SHA1_SPARC64 is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT
default or selected kernelversion does not have config value CONFIG_CRYPTO_SHA1_SPARC64.
Result is shown for kernelversion 6.9.9

SHA1 digest algorithm (SPARC64)

modulename: sha1-sparc64.ko

configname: CONFIG_CRYPTO_SHA1_SPARC64

Linux Kernel Configuration
└─>Cryptographic API
└─>SHA1 digest algorithm (SPARC64)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2) implemented
using sparc64 crypto instructions, when available.

source code:
arch/sparc/crypto/