qcacmn: Fix compilation issue in dfs

There is no defined variable "dfs_nol_channel" in function
"dfs_mark_leaking_chan_for_freq".

Change-Id: I4258a9d322bfd98dc644678d48ba3146f966b367
CRs-Fixed: 2554628

umac/dfs/core/src/misc/dfs_random_chan_sel.c

@@ -963,7 +963,7 @@ dfs_mark_leaking_chan_for_freq(struct wlan_dfs *dfs,
 				 */
 				dfs_debug(dfs, WLAN_DEBUG_DFS_RANDOM_CHAN,
 					"dfs: channel: %d will have bad leakage due to channel: %d\n",
-					dfs_nol_channel, temp_freq_lst[j]);
+					nol->nol_freq, temp_freq_lst[j]);
 				temp_freq_lst[j] = 0;
 			}
 			j++;