Since most of nRF5x-based boards can be used either as a standalone
development kit or as a BLE controller to connect to an external host,
add DT overlays so that the baud rate is correctly set to 1Mbit/s
whenever building the hci_uart sample application.
Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
Carles Cufi