mac80211: stop modifying HT SMPS capability

Instead of modifying the HT SMPS capability field
for stations, track the SMPS mode explicitly in a
new field in the station struct and use it in the
drivers that care about it. This simplifies the
code using it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/mvm/rs.c b/drivers/net/wireless/iwlwifi/mvm/rs.c
index 8ba36e5..56b636d 100644
--- a/drivers/net/wireless/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/iwlwifi/mvm/rs.c
@@ -1229,8 +1229,7 @@
 	if (!sta->ht_cap.ht_supported)
 		return -1;
 
-	if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2)
-						== WLAN_HT_CAP_SM_PS_STATIC)
+	if (sta->smps_mode == IEEE80211_SMPS_STATIC)
 		return -1;
 
 	/* Need both Tx chains/antennas to support MIMO */
@@ -1282,8 +1281,7 @@
 	if (!sta->ht_cap.ht_supported)
 		return -1;
 
-	if (((sta->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >> 2)
-						== WLAN_HT_CAP_SM_PS_STATIC)
+	if (sta->smps_mode == IEEE80211_SMPS_STATIC)
 		return -1;
 
 	/* Need both Tx chains/antennas to support MIMO */