[MIPS] SN: PCI fixup needs to include <irq.h>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/pci/fixup-sni.c b/arch/mips/pci/fixup-sni.c
index 0c9a473..36e5fb1 100644
--- a/arch/mips/pci/fixup-sni.c
+++ b/arch/mips/pci/fixup-sni.c
@@ -14,6 +14,8 @@
 #include <asm/mipsregs.h>
 #include <asm/sni.h>
 
+#include <irq.h>
+
 /*
  * PCIMT Shortcuts ...
  */