Regenerate Android.bp with new cargo2android.py

Test: make
Change-Id: I40d0cd434694a2dd49ea817743067e36bf0f44eb
diff --git a/Android.bp b/Android.bp
index 1db6c51..81e49c4 100644
--- a/Android.bp
+++ b/Android.bp
@@ -2,6 +2,7 @@
 
 rust_library_host {
     name: "libclang_sys",
+    // has rustc warnings
     crate_name: "clang_sys",
     srcs: ["src/lib.rs"],
     edition: "2015",