net: fix MIPS fallout from "net: remove interrupt.h inclusion from netdevice.h"

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index fec939f..086ce04 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -18,6 +18,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/interrupt.h>
 #include <linux/moduleparam.h>
 
 #include <linux/sched.h>