Adding high-res live wallpaper picker asset

Bug: 7400295
Change-Id: I919388c69b828c6464f57acf59c1cf6f6e6a9c85
Merge tag 'android-4.2.2_r1' of https://android.googlesource.com/platform/packages/wallpapers/LivePicker into 1.1

Android 4.2.2 release 1