iwlwifi: rename ps_mode to sm_ps

This patch renames iwl_priv.ps_mode for clearer
iwl_priv.current_ht_config.sm_ps (spatial multiplexing power save).

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-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h
index f302e93..7934f56 100644
--- a/drivers/net/wireless/iwlwifi/iwl-dev.h
+++ b/drivers/net/wireless/iwlwifi/iwl-dev.h
@@ -406,6 +406,7 @@
 	/* self configuration data */
 	u8 is_ht;
 	u8 supported_chan_width;
+	u8 sm_ps;
 	u8 is_green_field;
 	u8 sgf;			/* HT_SHORT_GI_* short guard interval */
 	u8 max_amsdu_size;
@@ -990,7 +991,6 @@
 	 * hardware */
 	u16 assoc_id;
 	u16 assoc_capability;
-	u8 ps_mode;
 
 	struct iwl_qos_info qos_data;