media: vimc: Constify the ent_config array

The ent_config array contains data that is never modified. Make it
const.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/test-drivers/vimc/vimc-core.c

@@ -81,7 +81,7 @@ struct vimc_pipeline_config {
  * Topology Configuration
  */
 
-static struct vimc_ent_config ent_config[] = {
+static const struct vimc_ent_config ent_config[] = {
 	[SENSOR_A] = {
 		.name = "Sensor A",
 		.type = &vimc_sensor_type