Handle passing allowed channels for SoftAp

This commit handles passing of allowed channel frequencies for ACS in
SoftAp. This is part of support of the 6GHz band.

Bug: 146186687
Bug: 139354972
Test: Manual
Test: atest com.android.wifi.server
Change-Id: I302fc843e0a2b79c38dacd05a0dcc90c13df5f36
10 files changed