[media] media controller: get rid of entity subtype on Kernel

Don't use anymore the type/subtype entity data/macros
inside the Kernel.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

include/uapi/linux/media.h

@@ -42,8 +42,6 @@ struct media_device_info {
 
 #define MEDIA_ENT_ID_FLAG_NEXT		(1 << 31)
 
-/* Used values for media_entity_desc::type */
-
 /*
  * Initial value to be used when a new entity is created
  * Drivers should change it to something useful