gpio: drop users of irq_set_chip_and_handler_name()

Switch all users of irq_set_chip_and_handler_name() to simply
use irq_set_chip_and_handler(), all just provide a boilerplate
name like "demux" or "mux" - a fact which is anyway obvious
from the hwirq number from the irqdomain now present in e.g.
/proc/interrupts.

Cc: Mathias Nyman <[e-mail]>
Cc: Dan Carpenter <[e-mail]>
Acked-by: David Cohen <[e-mail]>
Acked-by: Mika Westerberg <[e-mail]>
Tested-by: Mika Westerberg <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-intel-mid.c

···
 {
 	struct intel_mid_gpio *priv = d->host_data;
 
-	irq_set_chip_and_handler_name(irq, &intel_mid_irqchip,
-				      handle_simple_irq, "demux");
+	irq_set_chip_and_handler(irq, &intel_mid_irqchip, handle_simple_irq);
 	irq_set_chip_data(irq, priv);
 	irq_set_irq_type(irq, IRQ_TYPE_NONE);
 

drivers/gpio/gpio-lynxpoint.c

···
 {
 	struct lp_gpio *lg = d->host_data;
 
-	irq_set_chip_and_handler_name(irq, &lp_irqchip, handle_simple_irq,
-				      "demux");
+	irq_set_chip_and_handler(irq, &lp_irqchip, handle_simple_irq);
 	irq_set_chip_data(irq, lg);
 	irq_set_irq_type(irq, IRQ_TYPE_NONE);
 

drivers/gpio/gpio-msic.c

···
 
 	for (i = 0; i < mg->chip.ngpio; i++) {
 		irq_set_chip_data(i + mg->irq_base, mg);
-		irq_set_chip_and_handler_name(i + mg->irq_base,
-					      &msic_irqchip,
-					      handle_simple_irq,
-					      "demux");
+		irq_set_chip_and_handler(i + mg->irq_base,
+					 &msic_irqchip,
+					 handle_simple_irq);
 	}
 	irq_set_chained_handler(mg->irq, msic_gpio_irq_handler);
 	irq_set_handler_data(mg->irq, mg);

drivers/gpio/gpio-timberdale.c

···
 		return 0;
 
 	for (i = 0; i < pdata->nr_pins; i++) {
-		irq_set_chip_and_handler_name(tgpio->irq_base + i,
-			&timbgpio_irqchip, handle_simple_irq, "mux");
+		irq_set_chip_and_handler(tgpio->irq_base + i,
+			&timbgpio_irqchip, handle_simple_irq);
 		irq_set_chip_data(tgpio->irq_base + i, tgpio);
 #ifdef CONFIG_ARM
 		set_irq_flags(tgpio->irq_base + i, IRQF_VALID | IRQF_PROBE);