ARM: orion: replace setup_irq() by request_irq()

request_irq() is preferred over setup_irq(). Invocations of setup_irq()
occur after memory allocators are ready.

Per tglx[1], setup_irq() existed in olden days when allocators were not
ready by the time early interrupts were initialized.

Hence replace setup_irq() by request_irq().

[1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos

Signed-off-by: afzal mohammed <[e-mail]>
Reviewed-by: Andrew Lunn <[e-mail]>
Signed-off-by: Gregory CLEMENT <[e-mail]>

arch/arm/plat-orion/time.c

···
 	return IRQ_HANDLED;
 }
 
-static struct irqaction orion_timer_irq = {
-	.name		= "orion_tick",
-	.flags		= IRQF_TIMER,
-	.handler	= orion_timer_interrupt
-};
-
 void __init
 orion_time_set_base(void __iomem *_timer_base)
 {
···
 	/*
 	 * Setup clockevent timer (interrupt-driven).
 	 */
-	setup_irq(irq, &orion_timer_irq);
+	if (request_irq(irq, orion_timer_interrupt, IRQF_TIMER, "orion_tick",
+			NULL))
+		pr_err("Failed to request irq %u (orion_tick)\n", irq);
 	orion_clkevt.cpumask = cpumask_of(0);
 	clockevents_config_and_register(&orion_clkevt, tclk, 1, 0xfffffffe);
 }