CONFIG_SH_APSH4A3A is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

AP-SH4A-3A

modulename: board-apsh4a3a.ko

configname: CONFIG_SH_APSH4A3A

Linux Kernel Configuration
└─>Board support
└─>AP-SH4A-3A
In linux kernel since version 2.6.38 (release Date: 2011-03-14)  
Select AP-SH4A-3A if configuring for an ALPHAPROJECT AP-SH4A-3A.

source code: