CONFIG_CPU_SUBTYPE_SH7707 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh
SH7707
modulename: setup-sh770x.ko
configname: CONFIG_CPU_SUBTYPE_SH7707
Processor subtype
└─>SH7707
In linux kernel since version 2.6.12
Select SH7707 if you have a 60 Mhz SH-3 HD6417707 CPU.