default or selected kernelversion does not have config value CONFIG_MTD_DOCPROBE_55AA.
Result is shown for kernelversion 6.2.5

Probe for 0x55 0xAA BIOS Extension Signature

configname: CONFIG_MTD_DOCPROBE_55AA

Linux Kernel Configuration
└─>Device Drivers
└─>Memory Technology Device (MTD) support
└─>Self-contained MTD device drivers
└─>Probe for 0x55 0xAA BIOS Extension Signature
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Check for the 0x55 0xAA signature of a DiskOnChip, and do not
continue with probing if it is absent. The signature will always be
present for a DiskOnChip 2000 or a normal DiskOnChip Millennium.
Only if you have overwritten the first block of a DiskOnChip
Millennium will it be absent. Enable this option if you are using
LinuxBIOS or if you need to recover a DiskOnChip Millennium on which
you have managed to wipe the first block.