Turn ENABLE_DEVICE_SEARCH to DeviceConfig flag am: f1bcf7a4dd

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13419158

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6d4970839c663b92346d25bb4766f99b2c5c628f