Make binderDied(IBinder who) public API

Expose the binderDied() variant that supplies the IBinder that has
become invalid.

Bug: 207163286
CTS-Coverage-Bug: 214327236
Test: atest BinderDeathDispatcherTest
Change-Id: I7193e29287dcc5c2a6447514c84840eca8adf61f
2 files changed