In monitor mode, code decodes legacy rates and bandwidth information for
HT and VHT. Other changes include populating radiotap header with correct
nss and mcs values for legacy, HT and VHT frames. Mapping of mcs rates in
rx_msdu_start tlv and radiotap header info is done using Lithium data
structure document.
Change-Id: I5f20e5d89329738e3a6c076ee14457c003cab279
CRs-fixed: 2083027