Support software BCH ECC

configname: CONFIG_MTD_NAND_ECC_SW_BCH

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>NAND
└─>Raw/Parallel NAND Device Support
└─>Support software BCH ECC
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This enables support for software BCH error correction. Binary BCH
codes are more powerful and cpu intensive than traditional Hamming
ECC codes. They are used with NAND devices requiring more than 1 bit
of error correction.