qcacld-3.0: Use policy manager frequency APIs

For 6GHz support and to remove channel number ambiguity use policy
manager APIs updated for frequency in other modules. This change
covers following APIs:
policy_mgr_is_chnl_in_diff_band
policy_mgr_check_for_session_conc
policy_mgr_handle_conc_multiport
policy_mgr_change_sap_channel_with_csa
policy_mgr_get_channel
policy_mgr_get_nondfs_preferred_channel

Change-Id: I4a6673db3a02b6e8d7fa94ae452338db618e3883
CRs-fixed: 2545099
10 files changed