mac80211_hwsim: enable Beacon protection

Now that there is support for BIGTK configuration and AP/STA
functionality for using BIP with Beacon frames, indicate support for the
Beacon protection functionality.

Johannes: move this to hwsim, since it's not clear that all drivers
using mac80211 will do this correctly - lots of them modify the
beacon before transmission e.g. to update the TIM element, and that
would obviously break the signature.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200222132548.20835-7-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -2947,6 +2947,7 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
 			       NL80211_FEATURE_DYNAMIC_SMPS |
 			       NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
 	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
+	wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_BEACON_PROTECTION);
 
 	hw->wiphy->interface_modes = param->iftypes;