gpu: nvgpu: Include UAPI explicitly

Add explicit #includes for <uapi/linux/nvgpu.h> for source code files
that depend on it.

JIRA NVGPU-259

Change-Id: I717d5f1493423fd3a7a34b6dd3380d33a9307a09
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1596254
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/common/linux/cde.c

@@ -19,6 +19,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/fs.h>
 #include <linux/dma-buf.h>
+#include <uapi/linux/nvgpu.h>
 
 #include <trace/events/gk20a.h>
 

drivers/gpu/nvgpu/common/linux/ce2.c

@@ -14,6 +14,8 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <uapi/linux/nvgpu.h>
+
 #include <nvgpu/types.h>
 
 #include <nvgpu/hw/gk20a/hw_pbdma_gk20a.h>

drivers/gpu/nvgpu/common/linux/channel.c

@@ -32,6 +32,7 @@
 #include <linux/uaccess.h>
 #include <linux/dma-buf.h>
 #include <trace/events/gk20a.h>
+#include <uapi/linux/nvgpu.h>
 
 u32 nvgpu_get_gpfifo_entry_size(void)
 {

drivers/gpu/nvgpu/common/linux/clk_arb.c

@@ -31,6 +31,7 @@
 #ifdef CONFIG_DEBUG_FS
 #include <linux/debugfs.h>
 #endif
+#include <uapi/linux/nvgpu.h>
 
 #include <nvgpu/bitops.h>
 #include <nvgpu/lock.h>

drivers/gpu/nvgpu/common/linux/vidmem.c

@@ -15,6 +15,7 @@
  */
 
 #include <linux/dma-buf.h>
+#include <uapi/linux/nvgpu.h>
 
 #include <linux/platform/tegra/tegra_fd.h>