iwlwifi: name changed from "fat" to "ht40"

Rename "fat" to "ht40"
The term "fat channel" is deprecated in favor of "HT40"

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index 10ddcdd..dd66148 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -264,7 +264,7 @@
 void iwl_set_rxon_chain(struct iwl_priv *priv);
 int iwl_set_rxon_channel(struct iwl_priv *priv, struct ieee80211_channel *ch);
 void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
-u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
+u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv,
 			 struct ieee80211_sta_ht_cap *sta_ht_inf);
 void iwl_set_flags_for_band(struct iwl_priv *priv, enum ieee80211_band band);
 void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode);