ARC: [build] Fix warnings with CONFIG_DEBUG_SECTION_MISMATCH

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
diff --git a/arch/arc/kernel/irq.c b/arch/arc/kernel/irq.c
index d32c050..84ce531 100644
--- a/arch/arc/kernel/irq.c
+++ b/arch/arc/kernel/irq.c
@@ -26,7 +26,7 @@
  * -Disable all IRQs (on CPU side)
  * -Optionally, setup the High priority Interrupts as Level 2 IRQs
  */
-void __init arc_init_IRQ(void)
+void __cpuinit arc_init_IRQ(void)
 {
 	int level_mask = 0;