Deprecate unsafe readParcelableList API.

Deprecate unsafe parcel APIs and point to the safer ones that take the
expected type as parameter. Also mentioned the typed ones
that take the creator as argument since those are also more performant.

Test: Builds
Bug: 195622897
Bug: 199275680
Bug: 205985058
Change-Id: I77a1a925d8759fd122936780587e3488705d4c56