Update Android.bp by running cargo_embargo am: a2f3430b0a

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/darling_macro/+/3095284

Change-Id: Ibd843993a95b0cb911cd2075959ab65f076ebffa
Signed-off-by: Automerger Merge Worker <[email protected]>
diff --git a/Android.bp b/Android.bp
index 57e9749..03c3b01 100644
--- a/Android.bp
+++ b/Android.bp
@@ -9,7 +9,7 @@
     crate_name: "darling_macro",
     cargo_env_compat: true,
     cargo_pkg_version: "0.20.8",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     rustlibs: [
         "libdarling_core",