split timer0 and timer2 initialization. Move timer2 init early

Firmware/Marlin_main.cpp

@@ -1013,6 +1013,8 @@ static void w25x20cl_err_msg()
 // are initialized by the main() routine provided by the Arduino framework.
 void setup()
 {
+	timer2_init(); // enables functional millis
+
 	mmu_init();
 
 	ultralcd_init();