Use normal NDK in flatbuffer_headers am: d7ee8fa91c am: 551950836e
am: 2adf840b5a

Change-Id: I9e0e6542b0af9a46855b6460ac6beeac84645bd5
diff --git a/Android.bp b/Android.bp
index ca938d1..fe72938 100644
--- a/Android.bp
+++ b/Android.bp
@@ -16,6 +16,7 @@
     name: "flatbuffer_headers",
     export_include_dirs: ["include"],
     vendor_available: true,
+    sdk_version: "current",
 }
 
 cc_binary_host {