libbinder: hide BufferedTextOutput.h

Nothing uses this now, and the general feeling is that we should
deprecate TextOutput at some point in favor of liblog (potentially to
save a small amount of memory from static TextOutput objects). So,
hiding this header.

Bug: N/A
Test: builds
Change-Id: I4f1d8a1aa8a5db4e602da6499050881ab4aaeca2
diff --git a/libs/binder/BufferedTextOutput.cpp b/libs/binder/BufferedTextOutput.cpp
index fb424fd..856a178 100644
--- a/libs/binder/BufferedTextOutput.cpp
+++ b/libs/binder/BufferedTextOutput.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include <binder/BufferedTextOutput.h>
+#include "BufferedTextOutput.h"
 #include <binder/Debug.h>
 
 #include <cutils/atomic.h>