net: ethernet: apple: constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/apple/bmac.c

@@ -1621,7 +1621,7 @@ static int bmac_remove(struct macio_dev *mdev)
 	return 0;
 }
 
-static struct of_device_id bmac_match[] =
+static const struct of_device_id bmac_match[] =
 {
 	{
 	.name 		= "bmac",

drivers/net/ethernet/apple/mace.c

@@ -984,7 +984,7 @@ static irqreturn_t mace_rxdma_intr(int irq, void *dev_id)
     return IRQ_HANDLED;
 }
 
-static struct of_device_id mace_match[] =
+static const struct of_device_id mace_match[] =
 {
 	{
 	.name 		= "mace",