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

ICS IDE interface support

modulename: icside.ko

configname: CONFIG_BLK_DEV_IDE_ICSIDE

Linux Kernel Configuration
└─>Device Drivers
└─>ATA/ATAPI/MFM/RLL support (DEPRECATED)
└─>ICS IDE interface support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
On Acorn systems, say Y here if you wish to use the ICS IDE
interface card. This is not required for ICS partition support.
If you are unsure, say N to this.

source code: