bcf7463728
When BW Expansion feature is enabled using UCI or cfg80211tool command, the utility function to set/get the BW Expand feature is introduced inside DFS module. A new dfs member dfs_use_bw_expand is used to store the status of BW Expansion feature. CRs-Fixed: 3229250 Change-Id: If01e080f8e60e883fbeb2d7dfd599b91584bc293