Prefer 32-bit host executables on Mac.

Bug: 22527295
Change-Id: I2cb1d3086b65b8227e6bdac9c0485fdc452f1e9c
diff --git a/dexdump/Android.mk b/dexdump/Android.mk
index c6b4d47..a208ccf 100755
--- a/dexdump/Android.mk
+++ b/dexdump/Android.mk
@@ -50,5 +50,5 @@
 LOCAL_CFLAGS += -Wall
 LOCAL_SHARED_LIBRARIES += $(dexdump_libraries)
 LOCAL_MODULE := dexdump2
-LOCAL_MODULE_TAGS := optional
+LOCAL_MULTILIB := $(ART_MULTILIB_OVERRIDE_host)
 include $(BUILD_HOST_EXECUTABLE)