WifiManager: add call to see if apband conversion is required

Add call @hide allowing settings to check if the device requires softap
configs be converted from 5GHz only to ANY

Bug: 80251951
Test: frameworks/base/wifi/tests/runtests.sh
Change-Id: Id4d435eb55e2696d23ceb4d301e5d039e134d66a
4 files changed