Merge "Add split_display device profile." into sc-dev am: 8acc1ad025 am: e9cb9120b7

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

Change-Id: I3787e88e79682b4e303eeaec592f2e036eff86e3