Currently if SAP is up on 5 GHz DFS/non-DFS channel and country
change happens to world mode where SAP is not allowed on 5 GHz
channels then it moves to a 2.4 GHz channel and saves current
operating frequency band information, now again if a country
change happens SAP tries to move back to any allowed 5 GHz
DFS/non-DFS channel.
Sap should come to non-DFS channel first. If not available then
it should come on DFS channel
To address this issue, add a fix to check for first valid 5 GHz
non-DFS channel and first valid 5 GHz DFS channel. Move to
valid 5 GHz non-DFS channel if present.
Change-Id: I0cf3841e35e22efc0f518ce15b4cab40996cc645
CRs-Fixed: 3247522
7d514b7ba5