ESP8266 Disable Pin Initialization on Boot to fix pin toggling (#1185)

esphome/core/esphal.cpp

@@ -304,3 +304,14 @@ void *memchr(const void *s, int c, size_t n) {
 }
 };
 #endif
+
+#ifdef ARDUINO_ARCH_ESP8266
+extern "C" {
+extern void resetPins() {  // NOLINT
+  // Added in framework 2.7.0
+  // usually this sets up all pins to be in INPUT mode
+  // however, not strictly needed as we set up the pins properly
+  // ourselves and this causes pins to toggle during reboot.
+}
+}
+#endif