qcacld-3.0: Add ini configuration to limit supported HE MCS rates

Add ini configuration to limit supported TX/RX HE MCS rates.
In case of XR use-case, higher throughput is not needed but
higher reliability is expected. So, this ini provide option to
limit HE MCS rate capability to MCS0-7 to achieve higher reliability.

Change-Id: Id6343f5b28d341e5ee377d11ad8420e3b8ded6ef
CRs-Fixed: 3033342
3 files changed