sparc: Annotate of_device_id arrays with const or __initdata.

As suggested by Stephen Rothwell.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/hwmon/ultra45_env.c b/drivers/hwmon/ultra45_env.c
index 9aec95c..68e90ab 100644
--- a/drivers/hwmon/ultra45_env.c
+++ b/drivers/hwmon/ultra45_env.c
@@ -290,7 +290,7 @@
 	return 0;
 }
 
-static struct of_device_id env_match[] = {
+static const struct of_device_id env_match[] = {
 	{
 		.name = "env-monitor",
 		.compatible = "SUNW,ebus-pic16f747-env",