After SAP switches the channel, policy manager needs to check if
the host needs to change HW mode. SAP state machine updates channel
change event to hdd to indicate SAP channel switch. Hence move logic
to change HW mode from start bss success event to channel change
event case in sap event callback.
Problem scenario:
1. DUT is in Single MAC mode by default.
2. SAP is up on Channel-1. So SAP is on MAC-0.
3. Host sets Policy Mgr Hw mode = DBS.
4. STA comes up on Channel-36. As host is in DBS mode, STA came up
on MAC-1.
5. SAP does CSA to Channel-36 (STA’s channel). So SAP moves from
MAC-1 to MAC-0.
6. Host sets Policy Mgr HW mode = Single MAC (As both VDEVs are on
same band).
7. Now, SAP does CSA to Channel-11. As Policy Manager Hw mode is still
Single MAC, SAP is still on MAC-0. So now STA (Channel-36) & SAP
(Channel-1) are in MAC-0 doing MCC.
Fix:
After SAP switches channel, policy manager checks and changes HW mode
change in hdd sap event callback.
Change-Id: If7964057592d85a11dd77197c889a4ed77ed039a
CRs-Fixed: 2719810
687d129962