mac80211: rearrange struct txq_info for fewer holes

We can slightly decrease the size of struct txq_info by
rearranging some fields for fewer holes, so do that.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210618133832.1bf019a1fe2e.Ib54622b8d6dc1a9a7dc484e573c073119450538b@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/ieee80211_i.h

@@ -5,7 +5,7 @@
  * Copyright 2006-2007	Jiri Benc <jbenc@suse.cz>
  * Copyright 2007-2010	Johannes Berg <johannes@sipsolutions.net>
  * Copyright 2013-2015  Intel Mobile Communications GmbH
- * Copyright (C) 2018-2020 Intel Corporation
+ * Copyright (C) 2018-2021 Intel Corporation
  */
 
 #ifndef IEEE80211_I_H
@@ -839,9 +839,12 @@ struct txq_info {
 	struct fq_tin tin;
 	struct codel_vars def_cvars;
 	struct codel_stats cstats;
-	struct sk_buff_head frags;
-	struct list_head schedule_order;
+
 	u16 schedule_round;
+	struct list_head schedule_order;
+
+	struct sk_buff_head frags;
+
 	unsigned long flags;
 
 	/* keep last! */