[WCNCR00157913] dbdc: BSS shall use WMM0 if DBDC is disable

[Description]
Change WMM index to 0 if DBDC mode is OFF.

Change-Id: Iaf9712ca6b873d3f11dd60d9d7a86868b3fa1255
Signed-off-by: Th3 Huang <th3.huang@mediatek.com>
CR-Id: WCNCR00157913
Feature: dbdc
4 files changed