qcacld-3.0: Fix OOB in policy_mgr_is_chan_ok_for_dnbs

Fix out of bound array access for operating_channel[] and
vdev_id[] in policy_mgr_is_chan_ok_for_dnbs.

Change-Id: I21f1d20ebce7c775abd75524fc388160a1154a36
CRs-Fixed: 2504888
1 file changed