Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Id79b5cf25fbf9a9783f8d0b6bd70d473dfdc653d
diff --git a/Android.bp b/Android.bp
index 42476f3..9993778 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,12 +1,14 @@
 // This file is generated by cargo_embargo.
-// Do not modify this file as changes will be overridden on upgrade.
+// Do not modify this file after the first "rust_*" or "genrule" module
+// because the changes will be overridden on upgrade.
+// Content before the first "rust_*" or "genrule" module is preserved.
 
 rust_library_host {
     name: "libwinnow",
     crate_name: "winnow",
     cargo_env_compat: true,
     cargo_pkg_version: "0.5.37",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "alloc",