InputMapper refactor: Configure empty InputDevice am: 4f61f3c959 am: 691001a872

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23660747

Change-Id: If9d057ffbb2bcf11a8545c7711f453ed78d04c7b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>