default or selected kernelversion does not have config value CONFIG_CRYPTO_DES_Z990.
Result is shown for kernelversion 5.4.123
DES and Triple DES cipher algorithms for IBM zSeries z990
modulename: des_z990.ko
configname: CONFIG_CRYPTO_DES_Z990
Linux Kernel Configuration
└─>Cryptographic options
└─>DES and Triple DES cipher algorithms for IBM zSeries z990
In linux kernel since version 2.6.12
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).