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/include/linux/ieee80211.h b/include/linux/ieee80211.h
index be45645..333d3ae 100644
--- a/include/linux/ieee80211.h
+++ b/include/linux/ieee80211.h
@@ -708,7 +708,7 @@
 
 /* 802.11n HT capabilities masks */
 #define IEEE80211_HT_CAP_SUP_WIDTH		0x0002
-#define IEEE80211_HT_CAP_MIMO_PS		0x000C
+#define IEEE80211_HT_CAP_SM_PS			0x000C
 #define IEEE80211_HT_CAP_GRN_FLD		0x0010
 #define IEEE80211_HT_CAP_SGI_20			0x0020
 #define IEEE80211_HT_CAP_SGI_40			0x0040
@@ -737,11 +737,11 @@
 #define IEEE80211_HT_IE_NON_GF_STA_PRSNT	0x0004
 #define IEEE80211_HT_IE_NON_HT_STA_PRSNT	0x0010
 
-/* MIMO Power Save Modes */
-#define WLAN_HT_CAP_MIMO_PS_STATIC	0
-#define WLAN_HT_CAP_MIMO_PS_DYNAMIC	1
-#define WLAN_HT_CAP_MIMO_PS_INVALID	2
-#define WLAN_HT_CAP_MIMO_PS_DISABLED	3
+/* Spatial Multiplexing Power Save Modes */
+#define WLAN_HT_CAP_SM_PS_STATIC	0
+#define WLAN_HT_CAP_SM_PS_DYNAMIC	1
+#define WLAN_HT_CAP_SM_PS_INVALID	2
+#define WLAN_HT_CAP_SM_PS_DISABLED	3
 
 /* Authentication algorithms */
 #define WLAN_AUTH_OPEN 0