CONFIG_ARCH_SHMOBILE_MULTI is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
default or selected kernelversion does not have config value CONFIG_ARCH_SHMOBILE_MULTI.
Result is shown for kernelversion 6.5.1

SH-Mobile Series

modulename: clk-mstp.ko

and/or

clk-div6.ko

configname: CONFIG_ARCH_SHMOBILE_MULTI

Linux Kernel Configuration
└─>SH-Mobile Series
In linux kernel since version 3.12 (release Date: 2013-11-03)  

depends
CONFIG_MMU

is selected by
CONFIG_ARCH_EMEV2