cnss2: notify WLAN driver of system reboot

Notify WLAN driver of system reboot to avoid state
mismatch between cnss driver and WLAN driver.

Change-Id: I03e867484ee450c796c0dfabac7ed550a1d0337c
CRs-Fixed: 3467387

cnss2/main.c

@@ -3927,15 +3927,16 @@ static ssize_t shutdown_store(struct device *dev,
 {
 	struct cnss_plat_data *plat_priv = dev_get_drvdata(dev);
 
+	cnss_pr_dbg("Received shutdown notification\n");
 	if (plat_priv) {
 		set_bit(CNSS_IN_REBOOT, &plat_priv->driver_state);
+		cnss_bus_update_status(plat_priv, CNSS_SYS_REBOOT);
 		del_timer(&plat_priv->fw_boot_timer);
 		complete_all(&plat_priv->power_up_complete);
 		complete_all(&plat_priv->cal_complete);
+		cnss_pr_dbg("Shutdown notification handled\n");
 	}
 
-	cnss_pr_dbg("Received shutdown notification\n");
-
 	return count;
 }
 
@@ -4183,6 +4184,7 @@ static int cnss_reboot_notifier(struct notifier_block *nb,
 		container_of(nb, struct cnss_plat_data, reboot_nb);
 
 	set_bit(CNSS_IN_REBOOT, &plat_priv->driver_state);
+	cnss_bus_update_status(plat_priv, CNSS_SYS_REBOOT);
 	del_timer(&plat_priv->fw_boot_timer);
 	complete_all(&plat_priv->power_up_complete);
 	complete_all(&plat_priv->cal_complete);

inc/cnss2.h

@@ -86,6 +86,7 @@ enum cnss_driver_status {
 	CNSS_FW_DOWN,
 	CNSS_HANG_EVENT,
 	CNSS_BUS_EVENT,
+	CNSS_SYS_REBOOT,
 };
 
 enum cnss_host_dump_type {