Add support for getting binder via stable runtime ABI

Change netd_event_listener_interface to use platform C++ instead of
NDK C++ so that libnetd_resolv can call the APIs from libbinder_ndk
to get binder service.

Test: builts, booted
Change-Id: I9559545d3f08eda44f839894a93bcdc8c76dce5c
3 files changed