CONFIG_BRCMFMAC_PROTO_MSGBUF (not configurable)

configname: CONFIG_BRCMFMAC_PROTO_MSGBUF

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>BRCMFMAC_PROTO_MSGBUF
In linux kernel since version 3.17 (release Date: 2014-10-05)  

is depended by
CONFIG_BRCMFMAC_PCIE