mac80211: change MIMO_PS to SM_PS

This patch follows 11n spec naming more rigorously replacing MIMO_PS
with SM_PS (Spatial Multiplexing Power Save).

(Originally submitted as 4 patches, "mac80211: change MIMO_PS to SM_PS",
"iwlwifi: change MIMO_PS to SM_PS", "ath9k: change MIMO_PS to SM_PS",
and "iwlwifi: remove double definition of SM PS". -- JWL)

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 5b7b05c..a72569f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -191,20 +191,20 @@
 	if (!sta_ht_inf || !sta_ht_inf->ht_supported)
 		goto done;
 
-	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2;
+	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
 
 	sta_flags = priv->stations[index].sta.station_flags;
 
 	sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
 
 	switch (mimo_ps_mode) {
-	case WLAN_HT_CAP_MIMO_PS_STATIC:
+	case WLAN_HT_CAP_SM_PS_STATIC:
 		sta_flags |= STA_FLG_MIMO_DIS_MSK;
 		break;
-	case WLAN_HT_CAP_MIMO_PS_DYNAMIC:
+	case WLAN_HT_CAP_SM_PS_DYNAMIC:
 		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
 		break;
-	case WLAN_HT_CAP_MIMO_PS_DISABLED:
+	case WLAN_HT_CAP_SM_PS_DISABLED:
 		break;
 	default:
 		IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode);