safe_union@1.0 to vndk-sp

This is a types-only HAL used by any HAL as a convenient primitive for
effectively using safe_union, so it should be able to be
double-loadable.

Bug: 119790516
Test: build and boot walleye

Change-Id: Ibb65ef7eee5b571b332c4a4e262bbb698b935eaa
diff --git a/transport/safe_union/1.0/Android.bp b/transport/safe_union/1.0/Android.bp
index 0fc2305..0b52fe1 100644
--- a/transport/safe_union/1.0/Android.bp
+++ b/transport/safe_union/1.0/Android.bp
@@ -5,6 +5,7 @@
     root: "android.hidl",
     vndk: {
         enabled: true,
+        support_system_process: true,
     },
     srcs: [
         "types.hal",