CONFIG_CRYPTO_SHA1_ARM is not available for the selected architecture x86.
Result is shown for architecture arm

Hash functions: SHA-1

modulename: sha1-arm.ko

configname: CONFIG_CRYPTO_SHA1_ARM

Linux Kernel Configuration
└─>Accelerated Cryptographic Algorithms for CPU (arm)
└─>Hash functions: SHA-1
In linux kernel since version 3.1 (release Date: 2011-10-24)
SHA-1 secure hash algorithm (FIPS 180)

Architecture: arm
source code:
/arch/arm/crypto/