m68knommu: declare do_IRQ()

Need a declaration of do_IRQ for the 68328 interrupt handling code.
It is common to all m68knommu targets, so a common declaration makes
sense.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-m68knommu/machdep.h b/include/asm-m68knommu/machdep.h
index 1cf26d2..de9f47a 100644
--- a/include/asm-m68knommu/machdep.h
+++ b/include/asm-m68knommu/machdep.h
@@ -21,4 +21,6 @@
 
 extern void config_BSP(char *command, int len);
 
+extern void do_IRQ(int irq, struct pt_regs *fp);
+
 #endif /* _M68KNOMMU_MACHDEP_H */