mac80211: Update to version 5.15.81

The removed patches were applied upstream.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/kernel/mac80211/patches/ath/404-regd_no_assoc_hints.patch

@@ -1,6 +1,6 @@
 --- a/net/wireless/reg.c
 +++ b/net/wireless/reg.c
-@@ -3309,6 +3309,8 @@ void regulatory_hint_country_ie(struct w
+@@ -3315,6 +3315,8 @@ void regulatory_hint_country_ie(struct w
  	enum environment_cap env = ENVIRON_ANY;
  	struct regulatory_request *request = NULL, *lr;
  
@@ -9,7 +9,7 @@
  	/* IE len must be evenly divisible by 2 */
  	if (country_ie_len & 0x01)
  		return;
-@@ -3560,6 +3562,7 @@ static bool is_wiphy_all_set_reg_flag(en
+@@ -3566,6 +3568,7 @@ static bool is_wiphy_all_set_reg_flag(en
  
  void regulatory_hint_disconnect(void)
  {