qcacld-3.0: Fix the issue with SU Tx beamformer cfg setting

There are two cfg setting parameters defined for SU Tx beamformer
and improperly updated the cfg settings hence the Tx beamformer
capability advertised as unsupported always.
Remove the redundant setting for SU Tx beamformer and update the cfg
with correct values.

Change-Id: I422179ae87ab5c561f0356bcab4585fbdc53c0bd
CRs-Fixed: 2343090
4 files changed