default or selected kernelversion does not have config value CONFIG_CRYPTO_SHA1_Z990.
Result is shown for kernelversion 5.4.123

SHA1 digest algorithm for IBM zSeries z990

modulename: sha1_z990.ko

configname: CONFIG_CRYPTO_SHA1_Z990

Linux Kernel Configuration
└─>Cryptographic options
└─>SHA1 digest algorithm for IBM zSeries z990
In linux kernel since version 2.6.12  
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).

source code:
arch/s390/crypto/sha1_z990.c