Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I1456dcedaf6c9759c08bdaebbc0522dac256392a
diff --git a/Android.bp b/Android.bp
index fb31a43..b9e98f2 100644
--- a/Android.bp
+++ b/Android.bp
@@ -26,7 +26,7 @@
     crate_name: "argh_shared",
     cargo_env_compat: true,
     cargo_pkg_version: "0.1.12",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     rustlibs: ["libserde"],
     apex_available: [