InputMapper refactor: refactor device enable/disable method am: f4cdbefd am: eae9bd0a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/23587360



Change-Id: Iec59a25c17ce7b7159ce1582ae4a88bfb9574f9b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>