proper show_interrupts() prototype

Add a proper prototype for show_interrupts() in include/linux/interrupt.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index c3db4a0..dea7598 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -444,4 +444,6 @@
 }
 #endif
 
+int show_interrupts(struct seq_file *p, void *v);
+
 #endif