default or selected kernelversion does not have config value CONFIG_AB5500_DEBUG.
Result is shown for kernelversion 5.3.7

Enable debug info via debugfs

modulename: ab5500-debugfs.ko

configname: CONFIG_AB5500_DEBUG

Linux Kernel Configuration
└─>Device Drivers
└─>Multifunction device drivers
└─>Enable debug info via debugfs
In linux kernel since version 3.3 (release Date: 2012-03-18)  
Select this option if you want debug information from the AB5500
using the debug filesystem, debugfs.

source code: