libbinder: hide Debug.h header

This is all an implementation detail for TextOutput which we want to
delete anyway. Since I'm working on binder sockets (and I don't want to
expand the usage of alog), I might add some other functions here, which
I don't want to expose from libbinder.

Bug: 148676615
Bug: 167966510
Test: N/A

Change-Id: Id5677c9ac195dac046becc5d36b02bbdd1f7c339
diff --git a/libs/binder/BufferedTextOutput.cpp b/libs/binder/BufferedTextOutput.cpp
index 88c85bf..349658e 100644
--- a/libs/binder/BufferedTextOutput.cpp
+++ b/libs/binder/BufferedTextOutput.cpp
@@ -15,7 +15,6 @@
  */
 
 #include "BufferedTextOutput.h"
-#include <binder/Debug.h>
 
 #include <cutils/atomic.h>
 #include <utils/Log.h>
@@ -26,6 +25,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "Debug.h"
 #include "Static.h"
 
 // ---------------------------------------------------------------------------