Broadcom protocol support

configname: CONFIG_BT_HCIUART_BCM

Linux Kernel Configuration
└─>Networking support
└─>Bluetooth subsystem support
└─>Bluetooth device drivers
└─>Broadcom protocol support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
The Broadcom protocol support enables Bluetooth HCI over serial
port interface for Broadcom Bluetooth controllers.

Say Y here to compile support for Broadcom protocol.