x86/irq: Remove a redundant #ifdef directive

The call to irq_ctx_init() is wrapped in #ifdef CONFIG_X86_32.

The declaration of irq_ctx_init in irq.h provides already a stub inline for
the X86_32=n case.

Remove the redundant #ifdef in the code.

[ tglx: Massaged changelog ]

Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/1491811500-30307-1-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/irqinit.c

@@ -195,7 +195,5 @@ void __init native_init_IRQ(void)
 	if (!acpi_ioapic && !of_ioapic && nr_legacy_irqs())
 		setup_irq(2, &irq2);
 
-#ifdef CONFIG_X86_32
 	irq_ctx_init(smp_processor_id());
-#endif
 }