Currently, host decrements beacon switch count and sends
channel switch frame every time until count becomes 0 this
may introduce sync issue between fw and host in case fw has
not sent beacons but host decremented switch count due to
timeout and sent new channel switch frame or vdev restart in
case count beacomes 0.
Fix is to offload CSA to fw to avoid any sync issue.
Change-Id: Idb48d419ec4117ff39cb823ca8af75d7a0abc3c0
CRs-Fixed: 2828045
dc64913842