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/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 51288db..c0a9095 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -29,6 +29,7 @@
 #include <linux/mm.h>
 #include <linux/mmzone.h>
 #include <linux/pagemap.h>
+#include <linux/interrupt.h>
 #include <linux/swap.h>
 #include <linux/slab.h>
 #include <linux/smp.h>
@@ -599,7 +600,6 @@
 }
 
 
-extern int show_interrupts(struct seq_file *f, void *v); /* In arch code */
 static struct seq_operations int_seq_ops = {
 	.start = int_seq_start,
 	.next  = int_seq_next,