CONFIG_CPU_SH5 is not available for thedefaultarchitecture x86.
Result is shown for architecture sh64

SH-5

modulename: pci_sh5.ko

configname: CONFIG_CPU_SH5

Processor family
└─>SH-5
In linux kernel since version 2.6.12  
source code:
arch/sh64/kernel/pci_sh5.c