net: encx24j600_exit() can be static

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/encx24j600.c

@@ -1112,7 +1112,7 @@ static int __init encx24j600_init(void)
 }
 module_init(encx24j600_init);
 
-void encx24j600_exit(void)
+static void encx24j600_exit(void)
 {
 	spi_unregister_driver(&encx24j600_spi_net_driver);
 }