CONFIG_CPU_SUBTYPE_SH7770 is not available for the selected architecture x86.
Result is shown for architecture sh

Support SH7770 processor

modulename: setup-sh7770.ko

configname: CONFIG_CPU_SUBTYPE_SH7770

Processor sub-type selection
└─>Support SH7770 processor
In linux kernel since version 2.6.16 (release Date: 2006-03-19)
source code:
arch/sh/kernel/cpu/sh4a/setup-sh7770.c
selects
CONFIG_CPU_SH4A