soc: arm: nordic_nrf: align nrf_power calls to new scheme

Now the API to manage GPREGRET register is unified for all devices
having one or more GPREGRET entries.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>

soc/arm/nordic_nrf/nrf51/soc.c

@@ -29,7 +29,7 @@ LOG_MODULE_REGISTER(soc);
  */
 void sys_arch_reboot(int type)
 {
-	nrf_power_gpregret_set(NRF_POWER, (uint8_t)type);
+	nrf_power_gpregret_set(NRF_POWER, 0, (uint8_t)type);
 	NVIC_SystemReset();
 }
 #endif

soc/arm/nordic_nrf/nrf52/soc.c

@@ -31,7 +31,7 @@ LOG_MODULE_REGISTER(soc);
  */
 void sys_arch_reboot(int type)
 {
-	nrf_power_gpregret_set(NRF_POWER, (uint8_t)type);
+	nrf_power_gpregret_set(NRF_POWER, 0, (uint8_t)type);
 	NVIC_SystemReset();
 }
 #endif