CONFIG_H8300H_AKI3068NET is not available for thedefaultarchitecture x86.
Result is shown for architecture h8300
default or selected kernelversion does not have config value CONFIG_H8300H_AKI3068NET.
Result is shown for kernelversion 6.2.5

AE-3068/69

configname: CONFIG_H8300H_AKI3068NET

H8/300 platform
└─>AE-3068/69
In linux kernel since version 2.6.12  
AKI-H8/3068F / AKI-H8/3069F Flashmicom LAN Board Support
More Information. (Japanese Only)
<http://akizukidenshi.com/catalog/default.aspx>
AE-3068/69 Evaluation Board Support
More Information.
<http://www.microtronique.com/ae3069lan.htm>

selects
CONFIG_H83068