Merge "Add split_display device profile." into sc-dev am: 8acc1ad025 am: db36b95d56 am: 127604b3e1

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

Change-Id: I4b312cba7bc438fce9b6a16d6cddc231a76f5a55