sparc: Annotate of_device_id arrays with const or __initdata.

As suggested by Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/sbus/char/envctrl.c

@@ -1120,7 +1120,7 @@ static int __devexit envctrl_remove(struct of_device *op)
 	return 0;
 }
 
-static struct of_device_id envctrl_match[] = {
+static const struct of_device_id envctrl_match[] = {
 	{
 		.name = "i2c",
 		.compatible = "i2cpcf,8584",