media: mt9m111: constify video_subdev structures

The v4l2_subdev_ops structure is only passed as the third argument
of v4l2_i2c_subdev_init, which is const, so the v4l2_subdev_ops
structure can be const as well.  The other structures are only
stored in the v4l2_subdev_ops structure, all the fields of which are
const, so these structures can also be const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/mt9m111.c

@@ -835,7 +835,7 @@ static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
 	.s_ctrl = mt9m111_s_ctrl,
 };
 
-static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
+static const struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
 	.s_power	= mt9m111_s_power,
 #ifdef CONFIG_VIDEO_ADV_DEBUG
 	.g_register	= mt9m111_g_register,
@@ -865,7 +865,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
+static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
 	.g_mbus_config	= mt9m111_g_mbus_config,
 };
 
@@ -877,7 +877,7 @@ static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = {
 	.set_fmt	= mt9m111_set_fmt,
 };
 
-static struct v4l2_subdev_ops mt9m111_subdev_ops = {
+static const struct v4l2_subdev_ops mt9m111_subdev_ops = {
 	.core	= &mt9m111_subdev_core_ops,
 	.video	= &mt9m111_subdev_video_ops,
 	.pad	= &mt9m111_subdev_pad_ops,