Merge "Add device-specific tunings for external touchpads" into udc-dev am: 6c81f3c1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/21750183



Change-Id: I43d9dbf17f7f6542ae3b4ecc81a0e5dee674092c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>