olympic_open() must be __devinit

This patch fixes the following section mismatch:

<--  snip  -->

...
WARNING: drivers/net/built-in.o(.text+0x155573): Section mismatch in reference from the function olympic_open() to the function .devinit.text:olympic_init()
...

<--  snip  -->
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/tokenring/olympic.c

@@ -434,7 +434,7 @@ static int __devinit olympic_init(struct net_device *dev)
 
 }
 
-static int olympic_open(struct net_device *dev) 
+static int __devinit olympic_open(struct net_device *dev) 
 {
 	struct olympic_private *olympic_priv=netdev_priv(dev);
 	u8 __iomem *olympic_mmio=olympic_priv->olympic_mmio,*init_srb;