iwlagn: transport layer receives struct iwl_trans*

It still holds a pointer to iwl_priv. But hopefully this will disappear at some point.
Also add the multiple inclusion protection to iwl-trans.h that was forgotten.
Move iwl-trans structures to iwl-trans.h

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
index 6ed0eae..67b55c5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-lib.c
@@ -519,7 +519,7 @@
 	else
 		tx_ant_cfg_cmd = REPLY_TX_POWER_DBM_CMD;
 
-	return trans_send_cmd_pdu(priv, tx_ant_cfg_cmd, CMD_SYNC,
+	return trans_send_cmd_pdu(&priv->trans, tx_ant_cfg_cmd, CMD_SYNC,
 			sizeof(tx_power_cmd), &tx_power_cmd);
 }
 
@@ -1061,7 +1061,7 @@
 	if (ret)
 		return ret;
 
-	ret = trans_send_cmd(priv, &cmd);
+	ret = trans_send_cmd(&priv->trans, &cmd);
 	if (ret) {
 		clear_bit(STATUS_SCAN_HW, &priv->status);
 		iwlagn_set_pan_params(priv);
@@ -1167,7 +1167,7 @@
 		       flush_cmd.fifo_control);
 	flush_cmd.flush_control = cpu_to_le16(flush_control);
 
-	return trans_send_cmd(priv, &cmd);
+	return trans_send_cmd(&priv->trans, &cmd);
 }
 
 void iwlagn_dev_txfifo_flush(struct iwl_priv *priv, u16 flush_control)
@@ -1361,12 +1361,12 @@
 	if (priv->cfg->bt_params->bt_session_2) {
 		memcpy(&bt_cmd_2000.basic, &basic,
 			sizeof(basic));
-		ret = trans_send_cmd_pdu(priv, REPLY_BT_CONFIG,
+		ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG,
 			CMD_SYNC, sizeof(bt_cmd_2000), &bt_cmd_2000);
 	} else {
 		memcpy(&bt_cmd_6000.basic, &basic,
 			sizeof(basic));
-		ret = trans_send_cmd_pdu(priv, REPLY_BT_CONFIG,
+		ret = trans_send_cmd_pdu(&priv->trans, REPLY_BT_CONFIG,
 			CMD_SYNC, sizeof(bt_cmd_6000), &bt_cmd_6000);
 	}
 	if (ret)