default or selected kernelversion does not have config value CONFIG_BLK_DEV_PS2.
Result is shown for kernelversion 5.15.113

PS/2 ESDI hard disk support

modulename: ps2esdi.ko

configname: CONFIG_BLK_DEV_PS2

Linux Kernel Configuration
└─>Device Drivers
└─>Block devices
└─>PS/2 ESDI hard disk support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Say Y here if you have a PS/2 machine with a MCA bus and an ESDI
hard disk.

To compile this driver as a module, choose M here: the
module will be called ps2esdi.

source code:
depends
CONFIG_BLOCK
CONFIG_BROKEN
CONFIG_MCA
CONFIG_MCA_LEGACY