Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I6ffce799ccc5a3ea9a7639eb8dd95972a2ce79dd
diff --git a/Android.bp b/Android.bp
index 0457f8b..3df66fe 100644
--- a/Android.bp
+++ b/Android.bp
@@ -26,7 +26,7 @@
     crate_name: "kernlog",
     cargo_env_compat: true,
     cargo_pkg_version: "0.3.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     rustlibs: [
         "liblibc",