Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Idae50cf70612c5eb03a89c1359b2bd012d8ea237
diff --git a/Android.bp b/Android.bp
index 1882ea4..2736b8f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -47,7 +47,7 @@
     crate_name: "bstr",
     cargo_env_compat: true,
     cargo_pkg_version: "1.3.0",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "alloc",