gpu: nvgpu: Syncpoint invalid value to ~0.

As qnx syncpoint's invalid value is ~0, change the code
to handle this.

Bug 200603716

Change-Id: I5ec79688cd9e60066725781f1effe57692ec0c27
Signed-off-by: Dinesh <dt@nvidia.com>
(cherry picked from commit 705260565a75bc90683841c4c08e4c857bda39f0)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2331208
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/include/nvgpu/channel_sync_syncpt.h

@@ -2,7 +2,7 @@
  *
  * Nvgpu Channel Synchronization Abstraction (Syncpoints)
  *
- * Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -29,10 +29,9 @@
 #include <nvgpu/types.h>
 #include <nvgpu/utils.h>
 #include <nvgpu/nvgpu_mem.h>
+#include <nvgpu/nvhost.h>
 #include <nvgpu/channel_sync.h>
 
-#define NVGPU_INVALID_SYNCPT_ID		(~U32(0U))
-
 struct nvgpu_channel;
 struct nvgpu_channel_sync_syncpt;
 struct priv_cmd_entry;

drivers/gpu/nvgpu/include/nvgpu/nvhost.h

@@ -26,6 +26,7 @@
 #include <nvgpu/types.h>
 
 struct gk20a;
+#define NVGPU_INVALID_SYNCPT_ID	(~U32(0U))
 
 #ifdef CONFIG_TEGRA_GK20A_NVHOST