Modifying counter drivers (rtc and timer) to rely completely on
device tree and not on Kconfig of MDK flags.
Adapting dtsi for all SoCs and adapting test configuration.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
The nRF52840 DK board target, so far known as nrf52840_pca10056,
is renamed to nrf52840dk_nrf52840.
Its documentation and all references to its name in the tree are
updated accordingly. Overlay and configuration files specific to
this board are also renamed, to match the new board name.
Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>