Set fixed rate mcsnssmap and MCS for HE

Set ul_mcs value for uplink fixed rate cases.
Calculate mcsnssmap that needs to be set based on MCS value provided.
Set nss based on txstreams value needed for mcsnssmap calculation.
Set MCS in ap_set_rfeature command for HE program.

Signed-off-by: Priyadharshini Gowthaman <pgowtham@codeaurora.org>
2 files changed