reset: berlin: Make reset_control_ops const

The berlin_reset_ops structure is never modified. Make it const.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Antoine Tenart <antoine.tenart@free-electrons.com>
diff --git a/drivers/reset/reset-berlin.c b/drivers/reset/reset-berlin.c
index ac017df..369f391 100644
--- a/drivers/reset/reset-berlin.c
+++ b/drivers/reset/reset-berlin.c
@@ -46,7 +46,7 @@
 	return 0;
 }
 
-static struct reset_control_ops berlin_reset_ops = {
+static const struct reset_control_ops berlin_reset_ops = {
 	.reset	= berlin_reset_reset,
 };