Enable USB autosuspend for Bluetooth USB devices by default

configname: CONFIG_BT_HCIBTUSB_AUTOSUSPEND

Linux Kernel Configuration
└─>Networking support
└─>Bluetooth subsystem support
└─>Bluetooth device drivers
└─>Enable USB autosuspend for Bluetooth USB devices by default
In linux kernel since version 4.2 (release Date: 2015-08-30)  
Say Y here to enable USB autosuspend for Bluetooth USB devices by
default.

This can be overridden by passing btusb.enable_autosuspend=[y|n]
on the kernel commandline.