Update includes to L4T r32.7.4 and drop nvgpu/gk20a.h dependency

Also add instructions for updating `include/`. These files are now
only needed to build on Linux 4.9-based Tegra platforms.

1 files changed, 4 insertions, 2 deletions

diff --git a/nvdebug.h b/nvdebug.h
index 50230f7..e5b6564 100644
--- a/nvdebug.h
+++ b/nvdebug.h
@@ -9,13 +9,15 @@
  * - Helper functions for nvdebug
  */
 
-// TODO(jbakita): Don't depend on these.
-#include <nvgpu/gk20a.h>  // For struct gk20a
 #include <linux/proc_fs.h>  // For PDE_DATA() macro
 #include <linux/device.h>   // For dev_get_drvdata()
 #include <linux/version.h>  // For KERNEL_VERSION and LINUX_VERSION_CODE
 #include <asm/io.h>
 
+// Fully defined in include/nvgpu/gk20a.h. We only pass around pointers to
+// this, so declare as incomplete type to avoid pulling in the nvgpu headers.
+struct gk20a;
+
 /* Runlist Channel
   A timeslice group (TSG) is composed of channels. Each channel is a FIFO queue
   of GPU commands. These commands are typically queued from userspace.