feed wdt in bootloader if enabled. Since it is impossible to disable wdt

lib/sdk11/components/libraries/bootloader_dfu/bootloader.c

@@ -27,6 +27,7 @@
 #include "app_scheduler.h"
 
 #include "nrfx.h"
+#include "nrf_wdt.h"
 #include "app_timer.h"
 
 #include "boards.h"
@@ -116,6 +117,13 @@ static void wait_for_events(void)
 //    uint32_t err_code = sd_app_evt_wait();
 //    APP_ERROR_CHECK(err_code);
 
+    // Feed all Watchdog just in case application enable it
+    // WDT cannot be disabled once started. It even last through soft reset (NVIC Reset)
+    if ( nrf_wdt_started() )
+    {
+      for (uint8_t i=0; i<8; i++) nrf_wdt_reload_request_set(i);
+    }
+
     // Event received. Process it from the scheduler.
     app_sched_execute();