[WIFI][MAINLINE] Transition WificondControl interfaces: scan callbacks

Transition WificondControl public interfaces to that class itself.
Preparation for the class being extracted to an official API.

Classes shifted: scan callbacks

Bug: 140062898
Test: atest android.net.wifi
Test: atest com.android.server.wifi
Change-Id: I9fea54a61120928d61def25e30761d6d64c729eb
6 files changed
tree: 19a8b71cd4a2c5e5a5f98e16b1be7efb35fa3d24
  1. apex/
  2. service/
  3. PREUPLOAD.cfg