media: v4l2-mc: Make v4l2_pipeline_pm_{get,put} deprecated

The v4l2_pipeline_pm_get() and v4l2_pipeline_pm_put() functions were
needed to control sub-devices' power states before runtime PM. These
functions should no longer be used, and instead sub-device drivers should
use runtime PM.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

include/media/v4l2-mc.h

@@ -143,6 +143,9 @@ int v4l2_create_fwnode_links(struct v4l2_subdev *src_sd,
  * v4l2_pipeline_pm_get - Increase the use count of a pipeline
  * @entity: The root entity of a pipeline
  *
+ * THIS FUNCTION IS DEPRECATED. DO NOT USE IN NEW DRIVERS. USE RUNTIME PM
+ * ON SUB-DEVICE DRIVERS INSTEAD.
+ *
  * Update the use count of all entities in the pipeline and power entities on.
  *
  * This function is intended to be called in video node open. It uses
@@ -157,6 +160,9 @@ int v4l2_pipeline_pm_get(struct media_entity *entity);
  * v4l2_pipeline_pm_put - Decrease the use count of a pipeline
  * @entity: The root entity of a pipeline
  *
+ * THIS FUNCTION IS DEPRECATED. DO NOT USE IN NEW DRIVERS. USE RUNTIME PM
+ * ON SUB-DEVICE DRIVERS INSTEAD.
+ *
  * Update the use count of all entities in the pipeline and power entities off.
  *
  * This function is intended to be called in video node release. It uses