CONFIG_CPU_SH2A is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

CONFIG_CPU_SH2A (not configurable)

configname: CONFIG_CPU_SH2A

Linux Kernel Configuration
└─>System type
└─>CPU_SH2A
In linux kernel since version 2.6.20 (release Date: 2007-02-04)