Log render pipeline in gfxinfo dump

Change-Id: Ia50c445b29d918f274ec45632d61d8b8479c72eb
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index 43282c9..72c7e4e 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -450,6 +450,11 @@
     } else {
         fprintf(file, "\nNo caches instance.\n");
     }
+#if HWUI_NEW_OPS
+    fprintf(file, "\nPipeline=FrameBuilder\n");
+#else
+    fprintf(file, "\nPipeline=OpenGLRenderer\n");
+#endif
     fflush(file);
     return nullptr;
 }