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

Broadcom Broadband SoC


Linux Kernel Configuration
└─> Broadcom SoC Support
└─> Broadcom Broadband SoC

Say Y if you intend to run the kernel on a Broadcom Broadband ARM-based
BCA chipset.

This enables support for Broadcom BCA ARM-based broadband chipsets,
including the DSL, PON and Wireless family of chips.