Add support for preconnected RPC client am: e12fccc47f am: 0a6d210273 am: 9880e94d20 am: 287c8e8542

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1816819

Change-Id: I1ac333fc0483b62aeac68a66b88d50aef2edb3c2