CONFIG_CPU_SH5 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh

CONFIG_CPU_SH5 (not configurable)

modulename: intc-sh5.ko

and/or

setup-sh5.ko

and/or

pci-sh5.ko

configname: CONFIG_CPU_SH5

Linux/SuperH Kernel Configuration
└─>System type
└─>CPU_SH5
In linux kernel since version 2.6.12  
source code:
/arch/sh/drivers/pci/