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/video/bw2.c b/drivers/video/bw2.c
index e721644..1e35ba6 100644
--- a/drivers/video/bw2.c
+++ b/drivers/video/bw2.c
@@ -372,7 +372,7 @@
 	return 0;
 }
 
-static struct of_device_id bw2_match[] = {
+static const struct of_device_id bw2_match[] = {
 	{
 		.name = "bwtwo",
 	},