CONFIG_GENERIC_BF561_BOARD is not available for thedefaultarchitecture x86.
Result is shown for architecture blackfin
default or selected kernelversion does not have config value CONFIG_GENERIC_BF561_BOARD.
Result is shown for kernelversion 5.3.7

Generic

modulename: generic_board.ko

configname: CONFIG_GENERIC_BF561_BOARD

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

source code: