CONFIG_SGI_IP22 is not available for thedefaultarchitecture x86.
Result is shown for architecture mips

SGI IP22 (Indy/Indigo2)

configname: CONFIG_SGI_IP22

System type
└─>SGI IP22 (Indy/Indigo2)
In linux kernel since version 2.6.12  
This are the SGI Indy, Challenge S and Indigo2, as well as certain
OEM variants like the Tandem CMN B006S. To compile a Linux kernel
that runs on these, say Y here.