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

Change-Id: Iccb63cafc5db17abd423d589416d50ff21c89efa
diff --git a/nfc/1.0/Android.mk b/nfc/1.0/Android.mk
index 8d02748..69c2f05 100644
--- a/nfc/1.0/Android.mk
+++ b/nfc/1.0/Android.mk
@@ -65,4 +65,5 @@
   libhwbinder \
   libutils \
 
+LOCAL_MULTILIB := both
 include $(BUILD_SHARED_LIBRARY)