Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I16f8a4a7eb11085a77d3bbfc2ae864db6938277c
diff --git a/Android.bp b/Android.bp
index fc6030d..8b13c83 100644
--- a/Android.bp
+++ b/Android.bp
@@ -12,7 +12,7 @@
     crate_name: "mockall_derive",
     cargo_env_compat: true,
     cargo_pkg_version: "0.12.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2021",
     rustlibs: [
         "libcfg_if",
@@ -27,7 +27,7 @@
     crate_name: "mockall_derive",
     cargo_env_compat: true,
     cargo_pkg_version: "0.12.1",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {