Added code to ensure stable boot (#1121)

* If BUS powered, wait for capacitor to charge on boot, this ensures better boot stability

* Some cleanup

lib/HwTools/src/HwTools.cpp

@@ -677,4 +677,8 @@ bool HwTools::isVoltageOptimal(float range) {
 
 uint8_t HwTools::getBoardType() {
     return boardType;
+}
+
+void HwTools::setMaxVcc(float vcc) {
+    this->maxVcc = min(3.3f, vcc);
 }