Make FlexLexer buildable for native_bridge

Bug: http://b/153609531

Test: m libmcldScript.native_bridge

Change-Id: Ic58f84e68b224b109a56f61be5dd52bf3b109aa8
diff --git a/Android.bp b/Android.bp
index c3bde3e..758bd46 100644
--- a/Android.bp
+++ b/Android.bp
@@ -2,6 +2,8 @@
     name: "FlexLexer",
     host_supported: true,
     vendor_available: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
     export_include_dirs: ["common/flex"],
     notice: "common/flex/NOTICE",
 }