Add dual mode to flatland

Change-Id: I3544e12c9c911cfdd73fa20d038068c9eccb4161
diff --git a/cmds/flatland/Android.mk b/cmds/flatland/Android.mk
index d9478fe..c295167 100644
--- a/cmds/flatland/Android.mk
+++ b/cmds/flatland/Android.mk
@@ -13,7 +13,9 @@
 LOCAL_MODULE_TAGS := tests
 
 LOCAL_MODULE_PATH := $(local_target_dir)
-
+LOCAL_MULTILIB := both
+LOCAL_MODULE_STEM_32 := flatland
+LOCAL_MODULE_STEM_64 := flatland64
 LOCAL_SHARED_LIBRARIES := \
     libEGL      \
     libGLESv2   \