[netdrvr forcedeth] include linux/interrupt.h

Fixes build on some platforms.

drivers/net/forcedeth.c

@@ -73,6 +73,7 @@
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/delay.h>