CRIS: Don't use mask_irq as symbol name

kernel/irq/chip.c now uses these, which lead to compile error
for CRISv32.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
diff --git a/arch/cris/arch-v32/kernel/smp.c b/arch/cris/arch-v32/kernel/smp.c
index 058addd..84fed3b 100644
--- a/arch/cris/arch-v32/kernel/smp.c
+++ b/arch/cris/arch-v32/kernel/smp.c
@@ -168,8 +168,8 @@
 
 	/* Enable IRQ and idle */
 	REG_WR(intr_vect, irq_regs[cpu], rw_mask, vect_mask);
-	unmask_irq(IPI_INTR_VECT);
-	unmask_irq(TIMER0_INTR_VECT);
+	crisv32_unmask_irq(IPI_INTR_VECT);
+	crisv32_unmask_irq(TIMER0_INTR_VECT);
 	preempt_disable();
 	notify_cpu_starting(cpu);
 	local_irq_enable();