power: reset: brcm-kona-reset: Use devm_register_sys_off_handler(RESTART)

Use device life-cycle managed register function to simplify probe.
Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20240212162831.67838-8-afd@ti.comSigned-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/reset/brcm-kona-reset.c

@@ -15,8 +15,7 @@
 
 static void __iomem *kona_reset_base;
 
-static int kona_reset_handler(struct notifier_block *this,
-				unsigned long mode, void *cmd)
+static int kona_reset_handler(struct sys_off_data *data)
 {
 	/*
 	 * A soft reset is triggered by writing a 0 to bit 0 of the soft reset
@@ -31,18 +30,14 @@ static int kona_reset_handler(struct notifier_block *this,
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block kona_reset_nb = {
-	.notifier_call = kona_reset_handler,
-	.priority = 128,
-};
-
 static int kona_reset_probe(struct platform_device *pdev)
 {
 	kona_reset_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(kona_reset_base))
 		return PTR_ERR(kona_reset_base);
 
-	return register_restart_handler(&kona_reset_nb);
+	return devm_register_sys_off_handler(&pdev->dev, SYS_OFF_MODE_RESTART,
+					     128, kona_reset_handler, NULL);
 }
 
 static const struct of_device_id of_match[] = {