wireless: Set NL80211_EXT_FEATURE_CQM_RSSI_LIST in multiple drivers

Set the NL80211_EXT_FEATURE_CQM_RSSI_LIST wiphy extended feature
wholesale in all mac80211-based drivers that do not set the
IEEE80211_VIF_BEACON_FILTER flags on their interfaces.  mac80211 will
be processing supplied RSSI values in ieee80211_rx_mgmt_beacon and
will detect when the thresholds set by
ieee80211_set_cqm_rssi_range_config are crossed.  Remaining (few)
drivers need code to enable the firmware to monitor the thresholds.
This is mostly only compile-tested.

Signed-off-by: Andrew Zaborowski <andrew.zaborowski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
index dd66781..57e6af9 100644
--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c
@@ -1384,6 +1384,9 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev)
 
 	rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
 
+	wiphy_ext_feature_set(rt2x00dev->hw->wiphy,
+			      NL80211_EXT_FEATURE_CQM_RSSI_LIST);
+
 	/*
 	 * Initialize ieee80211 structure.
 	 */