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

Migo-R

configname: CONFIG_SH_MIGOR

Linux Kernel Configuration
└─>Board support
└─>Migo-R
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
Select Migo-R if configuring for the SH7722 Migo-R platform
by Renesas System Solutions Asia Pte. Ltd.



is selected by
CONFIG_SND_SIU_MIGOR