CONFIG_CPU_SUBTYPE_SH7722 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

Support SH7722 processor

modulename: setup-sh7722.ko

configname: CONFIG_CPU_SUBTYPE_SH7722

Linux Kernel Configuration
└─>Processor selection
└─>Support SH7722 processor
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
source code:
arch/sh/kernel/cpu//sh4a/setup-sh7722.c