Make philox_random_headers apex-available for com.android.neuralnetworks.

Test: coral-userdebug build
Bug: 148593574
Change-Id: I22b84b38e9d682966dceb24d62e5547eaea0fb04
diff --git a/nn/common/random/Android.bp b/nn/common/random/Android.bp
index c7d9e0f..8e3f93c 100644
--- a/nn/common/random/Android.bp
+++ b/nn/common/random/Android.bp
@@ -19,6 +19,11 @@
     host_supported: false,
     vendor_available: true,
     export_include_dirs: ["."],
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.neuralnetworks",
+        "test_com.android.neuralnetworks",
+    ],
 }
 
 cc_library_static {