libbinder: stop exporting private headers

Having a 'private' include directory for a library is somewhat of an
artifact. There is no need to export these (or once include_dirs is
eliminated, make them available at any capacity). We want libbinder to
completely encapsulate the kernel API.

Bug: N/A
Test: binderLibTest
Change-Id: If84ff928a186f3397150660c2cc1faadb46b796c
diff --git a/libs/binder/tests/binderLibTest.cpp b/libs/binder/tests/binderLibTest.cpp
index dc8c0f1..5676bd1 100644
--- a/libs/binder/tests/binderLibTest.cpp
+++ b/libs/binder/tests/binderLibTest.cpp
@@ -31,11 +31,11 @@
 #include <binder/IServiceManager.h>
 #include <binder/ParcelRef.h>
 
-#include <private/binder/binder_module.h>
 #include <linux/sched.h>
 #include <sys/epoll.h>
 #include <sys/prctl.h>
 
+#include "../binder_module.h"
 #include "binderAbiHelper.h"
 
 #define ARRAY_SIZE(array) (sizeof array / sizeof array[0])