Update Android.bp by running cargo_embargo

Test: ran cargo_embargo
Change-Id: I6fb866e33b5fc788f8165434be2b7f3cd2ca9160
diff --git a/Android.bp b/Android.bp
index aa4c5fd..dd16711 100644
--- a/Android.bp
+++ b/Android.bp
@@ -45,7 +45,7 @@
     crate_name: "cfg_if",
     cargo_env_compat: true,
     cargo_pkg_version: "1.0.0",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
@@ -60,7 +60,7 @@
     crate_name: "xcrate",
     cargo_env_compat: true,
     cargo_pkg_version: "1.0.0",
-    srcs: ["tests/xcrate.rs"],
+    crate_root: "tests/xcrate.rs",
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
@@ -76,7 +76,7 @@
     crate_name: "cfg_if",
     cargo_env_compat: true,
     cargo_pkg_version: "1.0.0",
-    srcs: ["src/lib.rs"],
+    crate_root: "src/lib.rs",
     edition: "2018",
     apex_available: [
         "//apex_available:platform",