[WCNCR00153322] tx: refine WMM set CMD usage between drv and fw.

[Description]
Refactor CMD usage for WMM set between driver and fw.

Change-Id: I4679149d5e2e141addc8a6da5f2393a294299c29
Signed-off-by: wayne.guo <wayne.guo@mediatek.com>
CR-Id: WCNCR00153322
Feature: tx
2 files changed