CONFIG_BOARD_A9M9750DEV is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
CONFIG_BOARD_A9M9750DEV (not configurable)
modulename: board-a9m9750dev.ko
configname: CONFIG_BOARD_A9M9750DEV
Linux Kernel Configuration
└─>NS9xxx Implementations
└─>BOARD_A9M9750DEV