MFC: fix dynamic changes in short slottime for 11g sta mode: set the      slot time based on the rcvd capabilities, not the existing ones
MFC: fix dynamic changes in short slottime for 11g sta mode: set the
     slot time based on the rcvd capabilities, not the existing ones

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase