CONFIG_BF524 is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BF524.
Result is shown for kernelversion 6.7-rc3

BF524

configname: CONFIG_BF524

CPU
└─>BF524
In linux kernel since version 2.6.25 (release Date: 2008-04-16)  
BF524 Processor Support.