CONFIG_CPU_SUBTYPE_SH7760 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

Support SH7760 processor

modulename: setup-sh7760.ko

configname: CONFIG_CPU_SUBTYPE_SH7760

Linux Kernel Configuration
└─>Processor selection
└─>Support SH7760 processor
In linux kernel since version 2.6.12  
source code:
arch/sh/kernel/cpu//sh4/setup-sh7760.c