Merge pull request #2881 from DavePutz/Issue2872

Added call to rtc_reset() to fix Issue #2872

Author: tannewt

ports/atmel-samd/supervisor/port.c

@@ -174,6 +174,10 @@ static void rtc_init(void) {
     #endif
     NVIC_ClearPendingIRQ(RTC_IRQn);
     NVIC_EnableIRQ(RTC_IRQn);
+#if CIRCUITPY_RTC
+    rtc_reset();
+#endif
+
 }
 
 safe_mode_t port_init(void) {