arm64: Get rid of handle_IRQ

All the arm64 irqchip drivers have been converted to handle_domain_irq,
making it possible to remove the handle_IRQ stub entierely.

Signed-off-by: Marc Zyngier <[e-mail]>
Acked-by: Catalin Marinas <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: Jason Cooper <[e-mail]>

arch/arm64/include/asm/hardirq.h

···
 	irq_err_count++;
 }
 
-extern void handle_IRQ(unsigned int, struct pt_regs *);
-
 /*
  * No arch-specific IRQ flags.
  */

arch/arm64/kernel/irq.c

···
 	return 0;
 }
 
-/*
- * handle_IRQ handles all hardware IRQ's.  Decoded IRQs should
- * not come via this function.  Instead, they should provide their
- * own 'handler'.  Used by platform code implementing C-based 1st
- * level decoding.
- */
-void handle_IRQ(unsigned int irq, struct pt_regs *regs)
-{
-	__handle_domain_irq(NULL, irq, false, regs);
-}
-
 void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
 {
 	if (handle_arch_irq)