default or selected kernelversion does not have config value CONFIG_BLK_DEV_TC86C001.
Result is shown for kernelversion 6.9.9

Toshiba TC86C001 support

modulename: tc86c001.ko

configname: CONFIG_BLK_DEV_TC86C001

Linux Kernel Configuration
└─>Device Drivers
└─>ATA/ATAPI/MFM/RLL support (DEPRECATED)
└─>Toshiba TC86C001 support
In linux kernel since version 2.6.21.1 (release Date: 2007-04-27)  
This driver adds support for Toshiba TC86C001 GOKU-S chip.

source code:
drivers/ide/tc86c001.c