Set prefer_rlibs for the DICE HAL to keep size down

Bug: 214231981
Test: build
Change-Id: I6f5a491314ff7582a7512d17fd117fa0d6a2c155
diff --git a/microdroid/dice/Android.bp b/microdroid/dice/Android.bp
index 1342a84..8026581 100644
--- a/microdroid/dice/Android.bp
+++ b/microdroid/dice/Android.bp
@@ -7,6 +7,7 @@
     srcs: ["service.rs"],
     relative_install_path: "hw",
     vendor: true,
+    prefer_rlib: true,
     rustlibs: [
         "android.hardware.security.dice-V1-rust",
         "libandroid_logger",