fallout of cleaning-up libutils includes

Test: run & compile
Bug: n/a
Change-Id: I63585ed5a764b9ce7af2187b79ca0c83e683fd7f
diff --git a/media/ndk/NdkImageReader.cpp b/media/ndk/NdkImageReader.cpp
index 30aa7fb..a3a4625 100644
--- a/media/ndk/NdkImageReader.cpp
+++ b/media/ndk/NdkImageReader.cpp
@@ -22,6 +22,7 @@
 #include "NdkImagePriv.h"
 #include "NdkImageReaderPriv.h"
 
+#include <cutils/atomic.h>
 #include <utils/Log.h>
 #include <android_runtime/android_view_Surface.h>