build 32- and 64-bit libs (auto-generated)

Change-Id: Iccb63cafc5db17abd423d589416d50ff21c89efa
diff --git a/benchmarks/msgq/1.0/Android.mk b/benchmarks/msgq/1.0/Android.mk
index 0f4eff1..50ff8e5 100644
--- a/benchmarks/msgq/1.0/Android.mk
+++ b/benchmarks/msgq/1.0/Android.mk
@@ -31,4 +31,5 @@
   libhwbinder \
   libutils \
 
+LOCAL_MULTILIB := both
 include $(BUILD_SHARED_LIBRARY)