CONFIG_ARCH_CATS is not available for the default architecture x86.
Result is shown for architecture arm


modulename: cats-hw.ko
configname: CONFIG_ARCH_CATS

Linux Kernel Configuration
└─> Footbridge Implementations
└─> CATS

Say Y here if you intend to run this kernel on the CATS.

Saying N will reduce the size of the Footbridge kernel.

source code: