Move bionic_macros.h from private to platform.

Test: treehugger
Change-Id: Ie473914f4c8924c7240b3ac22093a9daf42fc948
diff --git a/libc/malloc_debug/Config.cpp b/libc/malloc_debug/Config.cpp
index dbd3eac..11887e2 100644
--- a/libc/malloc_debug/Config.cpp
+++ b/libc/malloc_debug/Config.cpp
@@ -38,7 +38,7 @@
 #include <string>
 #include <vector>
 
-#include <private/bionic_macros.h>
+#include <platform/bionic/macros.h>
 
 #include "Config.h"
 #include "debug_log.h"