default or selected kernelversion does not have config value CONFIG_CRYPTO_SHA1_PPC.
Result is shown for kernelversion 6.9.9

SHA1 digest algorithm (powerpc)

modulename: sha1-powerpc.ko

configname: CONFIG_CRYPTO_SHA1_PPC

Linux Kernel Configuration
└─>Cryptographic API
└─>SHA1 digest algorithm (powerpc)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This is the powerpc hardware accelerated implementation of the
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).

source code: