Fix samd pin tracking

Author: tannewt

ports/atmel-samd/supervisor/port.c

@@ -341,6 +341,9 @@ safe_mode_t port_init(void) {
     // Reset everything into a known state before board_init.
     reset_port();
 
+    // Reset the pins too.
+    reset_all_pins();
+
     #ifdef SAMD21
     if (PM->RCAUSE.bit.BOD33 == 1 || PM->RCAUSE.bit.BOD12 == 1) {
         return SAFE_MODE_BROWNOUT;