Enable feature alloc when building ciborium-io am: e3e8fc85

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/ciborium-io/+/1973579

Change-Id: Ie5136387705acfdc938bc7daad0b1d7ca1b3b832

Android.bp

-// This file is generated by cargo2android.py --run --device --dependencies.
+// This file is generated by cargo2android.py --config cargo2android.json.
 // Do not modify this file as changes will be overridden on upgrade.
 
 
@@ -11,4 +11,5 @@ rust_library {
     cargo_pkg_version: "0.2.0",
     srcs: ["src/lib.rs"],
     edition: "2021",
+    features: ["alloc"],
 }

cargo2android.json

+{
+  "device": true,
+  "features": "alloc,",
+  "run": true,
+  "dependencies": true
+}