Add initial OpReorderer benchmarks

Change-Id: I6ca8ea89be2159331b2ad7031769c65f54161918
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 1a43658..842f575 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -263,4 +263,9 @@
     microbench/DisplayListCanvasBench.cpp \
     microbench/LinearAllocatorBench.cpp
 
+ifeq (true, $(HWUI_NEW_OPS))
+    LOCAL_SRC_FILES += \
+        microbench/OpReordererBench.cpp
+endif
+
 include $(BUILD_EXECUTABLE)