video: tegra: host: nvdla: Add support for internal buffers

- Add buffer type field to nvdla_mem_handle
- For internal buffers, skip pin and unpin operations and pass the
offset as final adress
- Also update error handling in nvdla_map_task_memory to match with
  convention

Jira DLA-4376

Change-Id: I662da30cb9c606d2f67b792f09e026af391c89d1
Signed-off-by: Anup Mahindre <amahindre@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2503708
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Praveen K <kpraveen@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit

include/uapi/linux/nvhost_nvdla_ioctl.h

@@ -3,7 +3,7 @@
  *
  * Tegra NvDLA Driver
  *
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2021, NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms and conditions of the GNU General Public License,
@@ -127,11 +127,18 @@ struct nvdla_get_q_status_args {
  *
  * @handle		handle to buffer allocated in userspace
  * @offset		offset in buffer
+ * @type		buffer heap type
+ * @reserved		reserved for future use
  *
  */
 struct nvdla_mem_handle {
 	__u32 handle;
 	__u32 offset;
+#define NVDLA_BUFFER_TYPE_MC		0U
+#define NVDLA_BUFFER_TYPE_CV		1U
+#define NVDLA_BUFFER_TYPE_INTERNAL	2U
+	__u8 type;
+	__u8 reserved[3];
 };
 
 /**