CONFIG_BRCMUTIL (not configurable)

modulename: brcmutil.ko

configname: CONFIG_BRCMUTIL

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>BRCMUTIL
In linux kernel since version 3 (release Date: 2011-07-21)  
source code:
drivers/net/wireless/broadcom/brcm80211/brcmutil/