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

Use SPINAND internal ECC

configname: CONFIG_MTD_SPINAND_ONDIEECC

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>Use SPINAND internal ECC
In linux kernel since version 3.13 (release Date: 2014-01-19)  
Internal ECC.
Enables Hardware ECC support for Micron SPI NAND.