Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I92de13c35cd6041c9ca78d0b3efbf6b728df0525
diff --git a/Android.bp b/Android.bp
index 69e7c40..081265f 100644
--- a/Android.bp
+++ b/Android.bp
@@ -26,7 +26,7 @@
     crate_name: "gdbstub",
     cargo_env_compat: true,
     cargo_pkg_version: "0.7.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     features: [
         "alloc",