Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Icf5b15c002b26d595d8285755096b515dbde981e
diff --git a/Android.bp b/Android.bp
index 07952cb..0346cdd 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,5 +1,7 @@
 // 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.
 
 package {
     default_team: "trendy_team_android_rust",
@@ -25,7 +27,7 @@
     crate_name: "tokio",
     cargo_env_compat: true,
     cargo_pkg_version: "1.32.0",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "bytes",
@@ -67,7 +69,7 @@
     crate_name: "tokio",
     cargo_env_compat: true,
     cargo_pkg_version: "1.32.0",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "bytes",