default or selected kernelversion does not have config value CONFIG_MTD_SHARP_SL.
Result is shown for kernelversion 5.3.7
ROM mapped on Sharp SL Series
modulename: sharpsl-flash.ko
configname: CONFIG_MTD_SHARP_SL
Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Mapping drivers for chip access
└─>ROM mapped on Sharp SL Series
In linux kernel since version 2.6.20 (release Date: 2007-02-04)
This enables access to the flash chip on the Sharp SL Series of PDAs.