Revert "Revert "libbinder: Consider VNDK_APEX as vendor stable""

This reverts commit e896c8e4053dbab5461b8dbd32c447572e504dd5.

Bug: 142582178
Test: device with current vndk boots successfully
Change-Id: I4f33955d7a361efd92e2ec68e5e21340809450a8
3 files changed