CONFIG_BFIN537_STAMP is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BFIN537_STAMP.
Result is shown for kernelversion 6.7-rc3

BF537-STAMP

modulename: stamp.ko

configname: CONFIG_BFIN537_STAMP

System type
└─>BF537-STAMP
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
BF537-STAMP board support.

source code:
arch/blackfin/mach-bf537/boards/stamp.c