Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Id5a6b75869567c94f943c248d3146dc61612ed36
diff --git a/Android.bp b/Android.bp
index 77c76b0..365685f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -45,7 +45,7 @@
     crate_name: "bitflags",
     cargo_env_compat: true,
     cargo_pkg_version: "2.4.2",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     apex_available: [
         "//apex_available:platform",