CONFIG_H8300 is not available for thedefaultarchitecture x86.
Result is shown for architecture h8300

CONFIG_H8300 (not configurable)

modulename: h8300_timer8.ko

configname: CONFIG_H8300

uClinux/h8300 (w/o MMU) Kernel Configuration
└─>H8300
In linux kernel since version 2.6.12  

is selected by
CONFIG_SMC91X