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/net/mac80211/main.c b/net/mac80211/main.c
index 396cfb2..7dc0631 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -1140,8 +1140,8 @@
 	ht_conf.ht_supported = 1;
 
 	ht_conf.cap = req_ht_cap->cap & sband->ht_info.cap;
-	ht_conf.cap &= ~(IEEE80211_HT_CAP_MIMO_PS);
-	ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_MIMO_PS;
+	ht_conf.cap &= ~(IEEE80211_HT_CAP_SM_PS);
+	ht_conf.cap |= sband->ht_info.cap & IEEE80211_HT_CAP_SM_PS;
 	ht_bss_conf.primary_channel = req_bss_cap->primary_channel;
 	ht_bss_conf.bss_cap = req_bss_cap->bss_cap;
 	ht_bss_conf.bss_op_mode = req_bss_cap->bss_op_mode;