cnss2: Enable support for qca6390 on hana-au

To enable support for qca6390 on hana-au:

1) Return 0, instead of an error code, when 'qcom,icc-path-count'
   isn't present in the device tree, given some chipsets like
   qca6390 don't need this parameter to get probed successfully;

2) Add one more vreg config, 'vdd-wlan-rfa3', into the vreg list
   as it's required for qca6390 to get probed;

3) Add one more dts parameter, 'qcom,multi-wlan-exchg' into the
   wlan device tree node on auto platforms, to reflect the fact
   that multiple wlan chipsets can be plugged, while only one of
   them exists at a time.

Also, reorder the parameters passed for debug printing in function
cnss_plat_ipc_init_fn(), given the original ordering is not
matching with the debug message literally.

Change-Id: I94d33fcfa2343646c55d8021894f35bc3cf8a56b

cnss2/main.c

@@ -3133,8 +3133,8 @@ static int cnss_register_bus_scale(struct cnss_plat_data *plat_priv)
 				   "qcom,icc-path-count",
 				   &plat_priv->icc.path_count);
 	if (ret) {
-		cnss_pr_err("Platform Bus Interconnect path not configured\n");
-		return -EINVAL;
+		cnss_pr_dbg("Platform Bus Interconnect path not configured\n");
+		return 0;
 	}
 	ret = of_property_read_u32(plat_priv->plat_dev->dev.of_node,
 				   "qcom,bus-bw-cfg-count",
@@ -3680,8 +3680,10 @@ static bool cnss_use_fw_path_with_prefix(struct cnss_plat_data *plat_priv)
 {
 	return (of_property_read_bool(plat_priv->plat_dev->dev.of_node,
 				      "qcom,converged-dt") ||
-	       of_property_read_bool(plat_priv->plat_dev->dev.of_node,
-				     "qcom,same-dt-multi-dev"));
+		of_property_read_bool(plat_priv->plat_dev->dev.of_node,
+				      "qcom,same-dt-multi-dev") ||
+		of_property_read_bool(plat_priv->plat_dev->dev.of_node,
+				      "qcom,multi-wlan-exchg"));
 }
 
 static const struct platform_device_id cnss_platform_id_table[] = {

cnss2/power.c

@@ -37,6 +37,7 @@ static struct cnss_vreg_cfg cnss_vreg_list[] = {
 	{"vdd-wlan-dig", 950000, 952000, 0, 0, 0},
 	{"vdd-wlan-rfa1", 1900000, 1900000, 0, 0, 0},
 	{"vdd-wlan-rfa2", 1350000, 1350000, 0, 0, 0},
+	{"vdd-wlan-rfa3", 1900000, 1900000, 450000, 0, 0},
 	{"alt-sleep-clk", 0, 0, 0, 0, 0},
 	{"vdd-wlan-en", 0, 0, 0, 10, 0},
 };

cnss_utils/cnss_plat_ipc_qmi.c

@@ -888,8 +888,8 @@ retry:
 			goto retry;
 		}
 		cnss_plat_ipc_err("Failed to init QMI handle after %d ms * %d, err = %d\n",
-				  ret, QMI_INIT_RETRY_DELAY_MS,
-				  QMI_INIT_RETRY_MAX_TIMES);
+				  QMI_INIT_RETRY_DELAY_MS,
+				  QMI_INIT_RETRY_MAX_TIMES, ret);
 		goto free_svc_hdl;
 	}