Add weak hook to trigger companion chip reinitialization

Author: facchinm

cores/arduino/Reset.cpp

@@ -69,6 +69,7 @@ static void banzai() {
 static int ticks = -1;
 
 void initiateReset(int _ticks) {
+	resetExternalChip();
 	ticks = _ticks;
 }
 

cores/arduino/Reset.h

@@ -26,6 +26,8 @@ void initiateReset(int ms);
 void tickReset();
 void cancelReset();
 
+ __attribute__ ((weak)) void resetExternalChip() {};
+
 #ifdef __cplusplus
 }
 #endif