sfc: Don't include net_driver.h from falcon_io.h

Signed-off-by: NBen Hutchings <bhutchings@solarflare.com>
Signed-off-by: NJeff Garzik <jgarzik@redhat.com>

drivers/net/sfc/falcon_io.h

@@ -13,7 +13,6 @@
 
 #include <linux/io.h>
 #include <linux/spinlock.h>
-#include "net_driver.h"
 
 /**************************************************************************
  *