qcacld-3.0: Fix AP state mismatch between hostapd and driver

AGO/AP is started and beaconing, but the hostapd_cli status cmd still
show "dfs". This will happen when the STA connected on DFS
channel and AGO/AP is starting on same DFS channel.
By design the AGO/AP CAC is skipped due to STA+SAP DFS concurrency.
If we skip CAC timer, we will need to indicate the CAC event
even though driver doesn't perform CAC, otherwise hostapd will
stuck in "DFS" state.

Change-Id: I7961d0b976fd84fc1f29449d98eb150d1463a92f
CRs-Fixed: 2733624