Enable _REENT_GLOBAL_STDIO_STREAMS for RTEMS

Signed-off-by: Sebastian Huber <sebastian.huber@embedded-brains.de>

newlib/libc/include/sys/config.h

@@ -238,6 +238,7 @@
 #define _READ_WRITE_RETURN_TYPE _ssize_t
 #define __DYNAMIC_REENT__
 #define _REENT_GLOBAL_ATEXIT
+#define _REENT_GLOBAL_STDIO_STREAMS
 #endif
 
 #ifndef __EXPORT

newlib/libc/stdio/local.h

@@ -38,7 +38,7 @@
    case _STDIO_CLOSE_PER_REENT_STD_STREAMS is defined these file descriptors
    will be closed via close() provided the owner of the reent structure
    triggerd the on demand reent initilization, see CHECK_INIT(). */
-#if !defined(__rtems__) && !defined(__tirtos__)
+#if !defined(__tirtos__)
 #define _STDIO_CLOSE_PER_REENT_STD_STREAMS
 #endif