gpu: nvgpu: Begin splitting IOCTL header

The end goal is to split all of the different IOCTLs into different
headers. This should make it a bit easier to work with these IOCTL
headers.

JIRA NVGPU-6428

Change-Id: I03a3de34cf5393271f3ecd0bc308247dcb4894ea
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2470986
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

include/uapi/linux/nvgpu-uapi-common.h

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 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,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _UAPI__LINUX_NVGPU_UAPI_COMMON_H
+
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+#if !defined(__KERNEL__)
+#define __user
+#define nvgpu_user
+
+/* Some userspace builds have __packed defined already */
+#if !defined(__packed)
+#define __packed __attribute__((packed))
+#endif /* __packed */
+
+#endif /* __KERNEL__ */
+
+#endif