Adjust visibility of libbinder_rpc_unstable

This allows us to move around code in packages/modules/Virtualizatuion
without also changing the visibility rule here.

Bug: 325196727
Test: builds
Change-Id: If5f0ede82728ef7fcaa9cca007ddc52fbb436f9a

Author: nioffe

libs/binder/Android.bp

@@ -664,9 +664,7 @@ cc_library {
     // Do not expand the visibility.
     visibility: [
         ":__subpackages__",
-        "//packages/modules/Virtualization/javalib/jni",
-        "//packages/modules/Virtualization/vm_payload",
-        "//packages/modules/Virtualization/demo_native",
+        "//packages/modules/Virtualization:__subpackages__",
         "//device/google/cuttlefish/shared/minidroid:__subpackages__",
         "//system/software_defined_vehicle:__subpackages__",
     ],