Make compsvc works in VM

compsvc was originally developed on Android over local binder. Now that
we can handle the RPC request over the VM boundary, we may start do
remove/break the local binder support.

Bug: 185161847
Test: odrefresh works
Change-Id: I593d30a05defa14288a7f0cc923581517350cc61
diff --git a/compos/src/compsvc.rs b/compos/src/compsvc.rs
index 16c3510..4ad2e03 100644
--- a/compos/src/compsvc.rs
+++ b/compos/src/compsvc.rs
@@ -48,7 +48,7 @@
 
 const WORKER_BIN: &str = "/apex/com.android.compos/bin/compsvc_worker";
 // TODO: Replace with a valid directory setup in the VM.
-const AUTHFS_MOUNTPOINT: &str = "/data/local/tmp/authfs_mnt";
+const AUTHFS_MOUNTPOINT: &str = "/data/local/tmp";
 
 struct CompService {
     worker_bin: PathBuf,