Use bindgen_nostd targets in libdice_nostd

Avoid sharing bindgen targets with Android tests as these require
coverage support, not present in core. Use the _nostd variants instead.

Bug: 237372981
Bug: 253402921
Test: atest vmbase_example.integration_test
Change-Id: I5d3590e5f9395279b48a805a5d50a172543c6622
diff --git a/libs/dice/Android.bp b/libs/dice/Android.bp
index 7cb68a5..8017cff 100644
--- a/libs/dice/Android.bp
+++ b/libs/dice/Android.bp
@@ -11,8 +11,8 @@
     prefer_rlib: true,
     stdlibs: ["libcore.rust_sysroot"],
     rustlibs: [
-        "libopen_dice_cbor_bindgen",
-        "libopen_dice_bcc_bindgen",
+        "libopen_dice_cbor_bindgen_nostd",
+        "libopen_dice_bcc_bindgen_nostd",
     ],
     whole_static_libs: [
         "libopen_dice_bcc",