iwlwifi: send reduce tx power info in command

Add the reduce tx power information in bt coex host command
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>

drivers/net/wireless/iwlwifi/iwl-agn-lib.c

@@ -256,6 +256,7 @@ void iwlagn_send_advance_bt_config(struct iwl_priv *priv)
 
 	basic.kill_ack_mask = priv->kill_ack_mask;
 	basic.kill_cts_mask = priv->kill_cts_mask;
+	basic.reduce_txpower = priv->reduced_txpower;
 	basic.valid = priv->bt_valid;
 
 	/*

drivers/net/wireless/iwlwifi/iwl-commands.h

@@ -1916,7 +1916,8 @@ struct iwl_basic_bt_cmd {
 	u8 bt3_timer_t2_value;
 	__le16 bt4_reaction_time; /* unused */
 	__le32 bt3_lookup_table[IWLAGN_BT_DECISION_LUT_SIZE];
-	__le16 bt4_decision_time; /* unused */
+	u8 reduce_txpower;
+	u8 reserved;
 	__le16 valid;
 };