This has been unreferenced since:
4ff616b647 modbus: rework interface configuration
This generates a compiler warning, but it went unnoticed because the
sample test is configured incorrectly and not running.
Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Add function to get Modbus RTU interface index according
to interface name. This can be used to clearly identify
interfaces in the application.
Signed-off-by: Johann Fischer <johann.fischer@nordicsemi.no>
