samples/bluetooth/hci-usb/prj.conf

CONFIG_STDOUT_CONSOLE=y
CONFIG_GPIO=y
CONFIG_ARC_INIT=n
CONFIG_USB=y
CONFIG_USB_DW=y
CONFIG_USB_DEVICE_STACK=y
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_BLUETOOTH=y
CONFIG_BLUETOOTH_STACK_HCI_RAW=y