Merge the bandwidth selection of the two API
wlansap_get_csa_chanwidth_from_phymode &
wlan_sap_get_concurrent.
Update 5G Force SCC target Max BW selection for dbs hw:
1. Max BW 80Mhz if sta_sap_scc_on_dfs_chan = 1 and Single SAP
2. Max BW 80Mhz if sta_sap_scc_on_dfs_chan = 0 and STA+SAP SCC
3. other case use User configured BW
The above Max BW value will be limited by SAP user configured
BW at the end.
Change-Id: I1b165d1411288ca6845f90103adbf8bbfc34f67d
CRs-Fixed: 2925750