Grant visibility to compos subpackages.

Needed to allow access from a test tool that lives in a subpackage.

Bug: 193603140
Test: Tool builds
Change-Id: I9aa7c0e20b71bd0a8f7075cfb5f2d3a0ed3b9cb7
diff --git a/libs/binder/Android.bp b/libs/binder/Android.bp
index da570f3..db46217 100644
--- a/libs/binder/Android.bp
+++ b/libs/binder/Android.bp
@@ -287,7 +287,7 @@
     // Do not expand the visibility.
     visibility: [
         "//packages/modules/Virtualization/authfs:__subpackages__",
-        "//packages/modules/Virtualization/compos",
+        "//packages/modules/Virtualization/compos:__subpackages__",
         "//packages/modules/Virtualization/microdroid",
     ],
 }