Generate apex_available from c2a instead of a patch

Test: Run c2a
Test: Build
Change-Id: I8d3e6865d8831285f1d818c0c934d8cde19a1ff9
diff --git a/Android.bp b/Android.bp
index 1fb6460..52d4891 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,5 @@
-// This file is generated by cargo2android.py --run --dependencies --device --tests --patch=patches/Android.bp.patch.
+// This file is generated by cargo2android.py --config cargo2android.json.
+// Do not modify this file as changes will be overridden on upgrade.
 
 package {
     default_applicable_licenses: ["external_rust_crates_pin-utils_license"],
@@ -60,6 +61,9 @@
 rust_test_host {
     name: "pin-utils_host_test_src_lib",
     defaults: ["pin-utils_defaults"],
+    test_options: {
+        unit_test: true,
+    },
 }
 
 rust_test {
@@ -82,6 +86,9 @@
     name: "pin-utils_host_test_tests_projection",
     defaults: ["pin-utils_defaults_pin_utils"],
     srcs: ["tests/projection.rs"],
+    test_options: {
+        unit_test: true,
+    },
 }
 
 rust_test {
@@ -94,6 +101,9 @@
     name: "pin-utils_host_test_tests_stack_pin",
     defaults: ["pin-utils_defaults_pin_utils"],
     srcs: ["tests/stack_pin.rs"],
+    test_options: {
+        unit_test: true,
+    },
 }
 
 rust_test {