Make libarect buildable for native_bridge

Also make headers available for RenderScript.

Bug: http://b/153609531

Test: m libarect.native_bridge

Change-Id: Iee387d19d167d8b90f4bf3fae7869ea370025b9a
Merged-In: Iee387d19d167d8b90f4bf3fae7869ea370025b9a
diff --git a/libs/nativebase/Android.bp b/libs/nativebase/Android.bp
index 9e7e4a2..8399e8c 100644
--- a/libs/nativebase/Android.bp
+++ b/libs/nativebase/Android.bp
@@ -16,6 +16,8 @@
     name: "libnativebase_headers",
     vendor_available: true,
     host_supported: true,
+    // TODO(b/153609531): remove when no longer needed.
+    native_bridge_supported: true,
     export_include_dirs: ["include"],
 
     target: {