[PATCH] m68knommu: implement irq_canonicalize()

Add a null definition for irq_canonicalize(). It is used in the gerneric
serial subsystem code, can't compile without it.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-m68knommu/irq.h

@@ -86,5 +86,6 @@ extern void (*mach_disable_irq)(unsigned int);
 #define enable_irq(x)	do { } while (0)
 #define disable_irq(x)	do { } while (0)
 #define disable_irq_nosync(x)	disable_irq(x)
+#define irq_canonicalize(irq)	(irq)
 
 #endif /* _M68K_IRQ_H_ */