default or selected kernelversion does not have config value CONFIG_AB5500_DEBUG.
Result is shown for kernelversion 5.6.17

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

Select this option if you want debug information from the AB5500
using the debug filesystem, debugfs.

source code: