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-calib.c b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
index 540e66f..204f0ec 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-calib.c
@@ -98,7 +98,7 @@
 			hcmd.len[0] = priv->calib_results[i].buf_len;
 			hcmd.data[0] = priv->calib_results[i].buf;
 			hcmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
-			ret = trans_send_cmd(priv, &hcmd);
+			ret = trans_send_cmd(&priv->trans, &hcmd);
 			if (ret) {
 				IWL_ERR(priv, "Error %d iteration %d\n",
 					ret, i);
@@ -484,7 +484,7 @@
 	memcpy(&(priv->sensitivity_tbl[0]), &(cmd.table[0]),
 	       sizeof(u16)*HD_TABLE_SIZE);
 
-	return trans_send_cmd(priv, &cmd_out);
+	return trans_send_cmd(&priv->trans, &cmd_out);
 }
 
 /* Prepare a SENSITIVITY_CMD, send to uCode if values have changed */
@@ -548,7 +548,7 @@
 	       &(cmd.enhance_table[HD_INA_NON_SQUARE_DET_OFDM_INDEX]),
 	       sizeof(u16)*ENHANCE_HD_TABLE_ENTRIES);
 
-	return trans_send_cmd(priv, &cmd_out);
+	return trans_send_cmd(&priv->trans, &cmd_out);
 }
 
 void iwl_init_sensitivity(struct iwl_priv *priv)
@@ -892,7 +892,7 @@
 			priv->_agn.phy_calib_chain_noise_gain_cmd);
 		cmd.delta_gain_1 = data->delta_gain_code[1];
 		cmd.delta_gain_2 = data->delta_gain_code[2];
-		trans_send_cmd_pdu(priv, REPLY_PHY_CALIBRATION_CMD,
+		trans_send_cmd_pdu(&priv->trans, REPLY_PHY_CALIBRATION_CMD,
 			CMD_ASYNC, sizeof(cmd), &cmd);
 
 		data->radio_write = 1;