Revert "video: tegra: host: add prefence signal support"

This reverts commit 109f8e8c53e5296ea8c782086500c2e78d99cfbd.

Change-Id: I4fd6f37e271c52f4a1c1b6870c0b1355118a301d
Signed-off-by: Sachin Jadhav <sachinj@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2133502

include/uapi/linux/nvdev_fence.h

@@ -3,7 +3,7 @@
  *
  * Tegra PVA/DLA fence support
  *
- * Copyright (c) 2018-2019, NVIDIA Corporation.  All rights reserved.
+ * Copyright (c) 2018, NVIDIA Corporation.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -34,7 +34,6 @@ enum nvdev_fence_kind {
  * struct nvdev_fence structure for passing fence information
  *
  * @type: Type of the fence (syncpoint, sync fd or semaphore)
- * @type: fence action (wait or signal)
  * @syncpoint_index: Syncpoint id
  * @syncpoint_value: Value of syncpoint id
  * @sync_fd: Linux sync FD handle
@@ -48,9 +47,6 @@ struct nvdev_fence {
 #define NVDEV_FENCE_TYPE_SYNC_FD      1
 #define NVDEV_FENCE_TYPE_SEMAPHORE    2
 #define NVDEV_FENCE_TYPE_SEMAPHORE_TS 3
-	__u32 action;
-#define NVDEV_FENCE_WAIT  	0
-#define NVDEV_FENCE_SIGNAL	1
 	__u32 syncpoint_index;
 	__u32 syncpoint_value;
 	__u32 sync_fd;