kernelconfig_penguin
default or selected kernelversion does not have config value CONFIG_B43_BCMA_EXTRA.
Result is shown for kernelversion 3.9.9

Hardware support that overlaps with the brcmsmac driver

configname: CONFIG_B43_BCMA_EXTRA

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> Wireless LAN
└─> Hardware support that overlaps with the brcmsmac driver