Merge "Add split_display device profile." into sc-dev am: 8acc1ad025 am: 5ffad73b6e am: 7642296862

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15144182

Change-Id: Ibcd570216d93747aa15dc731e616ea2563718d69