Move displayId into InputEvent

Now both KeyEvent and MotionEvent will contain displayId. This will help
with dispatching input events to specific displays. There are use cases
where a particular input device is used for a specific display only, and
it sends key events to the system. This will help with those usages.

Test: atest view.MotionEventTest view.KeyEventTest
Bug: 64258305
Change-Id: I75891037617ed60820d60736216a0d615ab5e3b0