media: intel/ipu6: Change deprecated lock comment

pre_streamon_queued is no longer used. The lock now is protecting active
and incoming lists.

Signed-off-by: Stanislaw Gruszka <[e-mail]>
Signed-off-by: Sakari Ailus <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/pci/intel/ipu6/ipu6-isys-queue.h

···
 struct ipu6_isys_queue {
 	struct vb2_queue vbq;
 	struct list_head node;
-	/*
-	 * @lock: serialise access to queued and pre_streamon_queued
-	 */
-	spinlock_t lock;
+	spinlock_t lock; /* Protects active and incoming lists */
 	struct list_head active;
 	struct list_head incoming;
 	unsigned int fw_output;