libbinder: log debug server start/stop

09-24 03:19:36.379  3299  3301 I binderHostDeviceTest-service: RpcBinder: Started Binder debug on android.binderHostDeviceTestService
09-24 03:19:36.380  3302  3302 I servicedispatcher: Finish setting up RPC on service binderHostDeviceTestService on port 52133
09-24 03:19:36.778  3299  3301 I binderHostDeviceTest-service: RpcBinder: binder died, shutting down RpcServer for android.binderHostDeviceTestService

Before we didn't have logs when this happens, but it's a pretty significant event.

Fixes: 244597104
Test: binderHostDeviceTest
Change-Id: Ic22851663d18e4fd3d3518a2b25714582f8e05d6