[Output Switcher] Fix list order for preference am: 7c9c5f29 am: 78b1d357 am: b6ca21a6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23710185



Change-Id: Icc42a8a7515df54a09a60d77088e829749b5ddeb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>