CONFIG_GDB_MAGICPRINT is not available for thedefaultarchitecture x86.
Result is shown for architecture h8300
default or selected kernelversion does not have config value CONFIG_GDB_MAGICPRINT.
Result is shown for kernelversion 6.2.5

Message Output for GDB MagicPrint service

configname: CONFIG_GDB_MAGICPRINT

Linux Kernel Configuration
└─>Kernel hacking
└─>Message Output for GDB MagicPrint service
In linux kernel since version 2.6.12  
kernel messages output using MagicPrint service from GDB