CONFIG_BOARD_ATNGW100_MKI is not available for thedefaultarchitecture x86.
Result is shown for architecture avr32
default or selected kernelversion does not have config value CONFIG_BOARD_ATNGW100_MKI.
Result is shown for kernelversion 6.5.1

ATNGW100 Network Gateway

configname: CONFIG_BOARD_ATNGW100_MKI

AVR32 board type
└─>ATNGW100 Network Gateway
In linux kernel since version 2.6.33 (release Date: 2010-02-24)