default or selected kernelversion does not have config value CONFIG_MTD_NAND_BCH.
Result is shown for kernelversion 6.9.9
CONFIG_MTD_NAND_BCH (not configurable)
modulename: nand_bch.ko
configname: CONFIG_MTD_NAND_BCH
Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Raw/Parallel NAND Device Support
└─>MTD_NAND_BCH