iwlwifi: fix the delta for remove max_txq_num patch

BIg portion of "iwlwifi: remove max_txq_num from hw_params" was
missing during merge, here is the fix for it.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-debugfs.c b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
index 7a1334e..9b71c87 100644
--- a/drivers/net/wireless/iwlwifi/iwl-debugfs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-debugfs.c
@@ -828,7 +828,7 @@
 
 	char *buf;
 	int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) +
-		(hw_params(priv).max_txq_num * 32 * 8) + 400;
+		(cfg(priv)->base_params->num_of_queues * 32 * 8) + 400;
 	const u8 *ptr;
 	ssize_t ret;