default or selected kernelversion does not have config value CONFIG_I2O_PROC.
Result is shown for kernelversion 6.5.1

I2O /proc support

modulename: i2o_proc.ko

configname: CONFIG_I2O_PROC

Linux Kernel Configuration
└─>Device Drivers
└─>I2O device support
└─>I2O /proc support
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you say Y here and to "/proc file system support", you will be
able to read I2O related information from the virtual directory
/proc/i2o.

To compile this support as a module, choose M here: the
module will be called i2o_proc.

source code:
depends
CONFIG_I2O