CONFIG_BF60x is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_BF60x.
Result is shown for kernelversion 6.7-rc3

CONFIG_BF60x (not configurable)

configname: CONFIG_BF60x

Linux Kernel Configuration
└─>BF60x
In linux kernel since version 3.1 (release Date: 2011-10-24)  
selects
CONFIG_IRQ_PREFLOW_FASTEOI

depends
CONFIG_BF609