Qualcomm Atheros protocol support

configname: CONFIG_BT_HCIUART_QCA

Linux Kernel Configuration
└─>Networking support
└─>Bluetooth subsystem support
└─>Bluetooth device drivers
└─>Qualcomm Atheros protocol support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
The Qualcomm Atheros protocol supports HCI In-Band Sleep feature
over serial port interface(H4) between controller and host.
This protocol is required for UART clock control for QCA Bluetooth
devices.

Say Y here to compile support for QCA protocol.