Merge "Support hinge angle sensor in unfold animation" into sc-v2-dev am: 6de15e59 am: d1147f9e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15638990

Change-Id: I9d3e30401d9e05a5285b53f1f36aa9c6d633683c