Revert^2 "[binder_common] Update binder import path"

Import from the binder crate root instead of binder::public_api for
compatibility with the new crate structure.

Relanding change: Ia37ec9d1ec9afea8ff61fecb06d13bfb8a4f65cf

Test: m
Bug: 196056781

Change-Id: I35e1d9268929f35d3ce494c2833f39f708170b96
diff --git a/binder_common/rpc_server.rs b/binder_common/rpc_server.rs
index 36075cf..5c9d2a0 100644
--- a/binder_common/rpc_server.rs
+++ b/binder_common/rpc_server.rs
@@ -16,8 +16,8 @@
 
 //! Helpers for implementing an RPC Binder server.
 
-use binder::public_api::SpIBinder;
 use binder::unstable_api::AsNative;
+use binder::SpIBinder;
 use std::os::raw;
 
 /// Run a binder RPC server, serving the supplied binder service implementation on the given vsock