[PATCH] spidernet: fix missing include

This is now required to avoid
drivers/net/spider_net.c:844: error: 'IPPROTO_TCP' undeclared

Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c
index e2ad9ae..1f5975a 100644
--- a/drivers/net/spider_net.c
+++ b/drivers/net/spider_net.c
@@ -29,6 +29,7 @@
 #include <linux/ethtool.h>
 #include <linux/firmware.h>
 #include <linux/if_vlan.h>
+#include <linux/in.h>
 #include <linux/init.h>
 #include <linux/ioport.h>
 #include <linux/ip.h>