Allow building for device.

Ran 'cargo2android.py --run --device'.

Bug: 158290206
Test: mm
Change-Id: If03068536d954895aca194c1e1871e72570ebbca
diff --git a/Android.bp b/Android.bp
index e6abbe4..ba70c15 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,7 +1,8 @@
-// This file is generated by cargo2android.py.
+// This file is generated by cargo2android.py --run --device.
 
-rust_library_host_rlib {
+rust_library_rlib {
     name: "libproc_macro_nested",
+    host_supported: true,
     crate_name: "proc_macro_nested",
     srcs: ["src/lib.rs"],
     edition: "2015",