mac80211: ath9k: enable MFP capability unconditionally

ath9k will already fallback on software-crypto for chipsets not
supporting IEEE802.11w (MFP). So advertising MFP is not dependent
on disabling HW crypto for all traffic entirely.

Tested on Sonicwall SonicPoint Ni (AR9132)

Signed-off-by: David Bauer <mail@david-bauer.net>

package/kernel/mac80211/patches/ath/450-ath9k-enabled-MFP-capability-unconditionally.patch

@@ -0,0 +1,34 @@
+From d946085ff5a331de64e91a2e3c96b9ca79d740f5 Mon Sep 17 00:00:00 2001
+From: David Bauer <mail@david-bauer.net>
+Date: Mon, 15 Jun 2020 00:10:34 +0200
+Subject: [PATCH] ath9k: enabled MFP capability unconditionally
+
+ath9k will already fallback on software-crypto for chipsets not
+supporting IEEE802.11w (MFP). So advertising MFP is not dependent
+on disabling HW crypto for all traffic entirely.
+
+Signed-off-by: David Bauer <mail@david-bauer.net>
+---
+ drivers/net/wireless/ath/ath9k/init.c | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -928,6 +928,7 @@ static void ath9k_set_hw_capab(struct at
+ 	ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
+ 	ieee80211_hw_set(hw, SUPPORT_FAST_XMIT);
+ 	ieee80211_hw_set(hw, SUPPORTS_CLONED_SKBS);
++	ieee80211_hw_set(hw, MFP_CAPABLE);
+ 
+ 	if (ath9k_ps_enable)
+ 		ieee80211_hw_set(hw, SUPPORTS_PS);
+@@ -940,9 +941,6 @@ static void ath9k_set_hw_capab(struct at
+ 				IEEE80211_RADIOTAP_MCS_HAVE_STBC;
+ 	}
+ 
+-	if (AR_SREV_9160_10_OR_LATER(sc->sc_ah) || ath9k_modparam_nohwcrypt)
+-		ieee80211_hw_set(hw, MFP_CAPABLE);
+-
+ 	hw->wiphy->features |= NL80211_FEATURE_ACTIVE_MONITOR |
+ 			       NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE |
+ 			       NL80211_FEATURE_P2P_GO_CTWIN;