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

CONFIG_SUPERH (not configurable)

configname: CONFIG_SUPERH

Linux 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/>.