tests/bluetooth/shell/cdc_acm.conf

CONFIG_USB_DEVICE_STACK_NEXT=y
CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=y
CONFIG_CDC_ACM_SERIAL_PRODUCT_STRING="Zephyr BT Shell"

CONFIG_UART_LINE_CTRL=y
CONFIG_SHELL_BACKEND_SERIAL_CHECK_DTR=y