Add a sample that shows how dynamic pin control can be useful to remap a
peripheral to a different set of pins.
NOTE: default pin configuration is provided for the nRF52840-DK board.
Such configuration will be removed once all nRF-based boards are ported
to pinctrl.
Thanks to Francesco for documentation suggestions.
Co-authored-by: Francesco D. Servidio <francesco.servidio@nordicsemi.no>
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>