Merge "Allow input device config files in product and system_ext." into sc-dev am: f933d3c8 am: a6182907 am: d2adf6bc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/14388083

Change-Id: Ie0f43431eb80f8d9ecc0eaaaab9a9b2133c340c1