Sparseify MIPS.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/irq.h b/include/asm-mips/irq.h
index 3f2470e..8a342cc 100644
--- a/include/asm-mips/irq.h
+++ b/include/asm-mips/irq.h
@@ -24,11 +24,9 @@
 
 struct pt_regs;
 
-#ifdef CONFIG_PREEMPT
-
 extern asmlinkage unsigned int do_IRQ(unsigned int irq, struct pt_regs *regs);
 
-#else
+#ifdef CONFIG_PREEMPT
 
 /*
  * do_IRQ handles all normal device IRQ's (the special