Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: Ia0e3060b418be39f3a00b61f00d5bf9189156779
diff --git a/Android.bp b/Android.bp
index 4f3b6ae..9c386fe 100644
--- a/Android.bp
+++ b/Android.bp
@@ -36,10 +36,8 @@
     crate_name: "clang_sys",
     cargo_env_compat: true,
     cargo_pkg_version: "1.7.0",
-    srcs: [
-        "src/lib.rs",
-        ":copy_clang-sys_build_out",
-    ],
+    crate_root: "src/lib.rs",
+    srcs: [":copy_clang-sys_build_out"],
     edition: "2015",
     features: [
         "clang_10_0",