scripts: runners: nrf54H/92: Use RESET_HARD instead of RESET_SYSTEM

The nRF54H and the nRF92 series do not support the RESET_SYSTEM reset
kind. Instead one must use RESET_HARD, which this patch now implements.

Signed-off-by: Carles Cufi <carles.cufi@nordicsemi.no>
1 file changed