[rpc_binder] Add ARpcServer_newBoundSocket API

This cl is part of the change to replace the init-dependent binder
API ARpcServer_newInitUnixDomain with a more generic version
ARpcServer_newBoundSocket.

Test: atest microdroid_manager_test
Bug: 275729094

Change-Id: I5b8688fb5964e775845a3b878466f8a3cfee2e25
diff --git a/libs/binder/libbinder_rpc_unstable.map.txt b/libs/binder/libbinder_rpc_unstable.map.txt
index 63679c2..50f7deb 100644
--- a/libs/binder/libbinder_rpc_unstable.map.txt
+++ b/libs/binder/libbinder_rpc_unstable.map.txt
@@ -3,7 +3,7 @@
     ARpcServer_free;
     ARpcServer_join;
     ARpcServer_newInet;
-    ARpcServer_newInitUnixDomain;
+    ARpcServer_newBoundSocket;
     ARpcServer_newVsock;
     ARpcServer_shutdown;
     ARpcServer_start;