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

CONFIG_SUPERH (not configurable)

modulename: setup-bus.ko

configname: CONFIG_SUPERH

Linux/SuperH Kernel Configuration
└─>SUPERH
In linux kernel since version 2.6.12  
The SuperH is a RISC processor targeted for use in embedded systems
and consumer electronics; it was also used in the Sega Dreamcast
gaming console. The SuperH port has a home page at
<http://www.linux-sh.org/>.

source code:
drivers/pci/

is selected by
CONFIG_SMSC911X