[WCNCR00148136] softap: Fix DFS test cmd and add country element in cmd

[Description]
Fix DFS test cmd and add country element in cmd
1. Fix DFS test cmd bug
2. Add country element in DFS cmd

Change-Id: If1ce518d5d81554035750cd8bfae77d95035e37f
Feature: softap
Signed-off-by: Chun Lee <chun.lee@mediatek.com>
CR-Id: WCNCR00148136
11 files changed