Move Backup to the system task.

src/components/datetime/DateTimeController.cpp

@@ -76,7 +76,6 @@ void DateTime::UpdateTime(uint32_t systickCounter) {
   } else if (hour != 0) {
     isMidnightAlreadyNotified = false;
   }
-  NoInit_BackUpTime = currentDateTime;
 }
 
 const char* DateTime::MonthShortToString() {

src/components/datetime/DateTimeController.h

@@ -2,7 +2,6 @@
 
 #include <cstdint>
 #include <chrono>
-extern std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> NoInit_BackUpTime;
 
 namespace Pinetime {
   namespace System {

src/systemtask/SystemTask.cpp

@@ -353,6 +353,7 @@ void SystemTask::Work() {
     monitor.Process();
     uint32_t systick_counter = nrf_rtc_counter_get(portNRF_RTC_REG);
     dateTimeController.UpdateTime(systick_counter);
+    NoInit_BackUpTime = dateTimeController.CurrentDateTime();
     if (!nrf_gpio_pin_read(pinButton))
       watchdog.Kick();
   }

src/systemtask/SystemTask.h

@@ -30,6 +30,7 @@
 #include "drivers/Watchdog.h"
 #include "Messages.h"
 
+extern std::chrono::time_point<std::chrono::system_clock, std::chrono::nanoseconds> NoInit_BackUpTime;
 namespace Pinetime {
   namespace Drivers {
     class Cst816S;