default or selected kernelversion does not have config value CONFIG_I2O_CONFIG.
Result is shown for kernelversion 6.5.1

I2O Configuration support

modulename: i2o_config.ko

configname: CONFIG_I2O_CONFIG

Linux Kernel Configuration
└─>Device Drivers
└─>I2O device support
└─>I2O Configuration support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Say Y for support of the configuration interface for the I2O adapters.
If you have a RAID controller from Adaptec and you want to use the
raidutils to manage your RAID array, you have to say Y here.

To compile this support as a module, choose M here: the
module will be called i2o_config.

Note: If you want to use the new API you have to download the
i2o_config patch from http://i2o.shadowconnect.com/

source code: