CONFIG_H8300_H8MAX is not available for thedefaultarchitecture x86.
Result is shown for architecture h8300
default or selected kernelversion does not have config value CONFIG_H8300_H8MAX.
Result is shown for kernelversion 6.7.7

H8MAX

configname: CONFIG_H8300_H8MAX

H8/300 platform
└─>H8MAX
In linux kernel since version 3.10 (release Date: 2013-06-30)  
H8MAX Evaluation Board Support
More Information. (Japanese Only)
<http://strawberry-linux.com/h8/index.html>