Merge pull request #12224 from maribu/esp32-early-stdio

cpu/esp32: Moved stdio_init() before periph_init()

cpu/esp32/startup.c

@@ -33,6 +33,7 @@
 #include "kernel_defines.h"
 #include "kernel_init.h"
 #include "log.h"
+#include "stdio_base.h"
 #include "syscalls.h"
 #include "thread_arch.h"
 
@@ -319,6 +320,9 @@ static NORETURN void IRAM system_init (void)
     /* initialize the board */
     board_init();
 
+    /* initialize stdio */
+    stdio_init();
+
     /* trigger static peripheral initialization */
     periph_init();