CONFIG_ARCH_SHMOBILE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Renesas SH-Mobile / R-Mobile

modulename: pm-rmobile.ko

configname: CONFIG_ARCH_SHMOBILE

ARM system type
└─>Renesas SH-Mobile / R-Mobile
In linux kernel since version 2.6.30 (release Date: 2009-06-09)  
Support for Renesas's SH-Mobile and R-Mobile ARM platforms.