Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I9d48b3ef683cbb0ee44f6042c1687748511c4ee8
diff --git a/Android.bp b/Android.bp
index 87dd121..d614f40 100644
--- a/Android.bp
+++ b/Android.bp
@@ -10,7 +10,7 @@
     crate_name: "gbm",
     cargo_env_compat: true,
     cargo_pkg_version: "0.14.2",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     features: [
         "drm",