regulator: max8973: Use irq_get_trigger_type() helper

Use irq_get_trigger_type() to replace irq_get_irq_data() and then
irqd_get_trigger_type(), if the irq data is NULL it will return 0.

Signed-off-by: Jinjie Ruan <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/max8973-regulator.c

···
 static int max8973_thermal_init(struct max8973_chip *mchip)
 {
 	struct thermal_zone_device *tzd;
-	struct irq_data *irq_data;
-	unsigned long irq_flags = 0;
+	unsigned long irq_flags;
 	int ret;
 
 	if (mchip->id != MAX77621)
···
 	if (mchip->irq <= 0)
 		return 0;
 
-	irq_data = irq_get_irq_data(mchip->irq);
-	if (irq_data)
-		irq_flags = irqd_get_trigger_type(irq_data);
+	irq_flags = irq_get_trigger_type(mchip->irq);
 
 	ret = devm_request_threaded_irq(mchip->dev, mchip->irq, NULL,
 					max8973_thermal_irq,