qcacld-3.0: Add support for aux eMLSR HW modes in policy mgr
Currently, if FW advertises more than three HW modes, host
returns error as the current max is 3. Need to increase value
to 4 to support aux eMLSR single and aux eMLSR split modes.
In addition, add path to handle aux caps when advertised from FW.
Change-Id: I4ee873951952c5b1abd31e9e28084d32eda782bd
CRs-Fixed: 3599089