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: I3e6ccf817de9e49efad39897638b7693831df73e