Revert "[WIFICOND][API] Update channel API from array to list"

This reverts commit 3c2dae8bf0054195f5a0dde70ba84ed4352d7d95.

[API council request]

Bug: 148680192
Test: atest com.android.server.wifi
20 files changed
tree: 8a2ddbc32608ff1affd88eac814c161d06d83666
  1. apex/
  2. service/
  3. PREUPLOAD.cfg