gpu : nvgpu: secure boot code unification.

This exposes all secure boot functions that can be
re-used by other chips. This is the first patch in
this series. Other pacthes will also follow.

JIRA NVGPU-60

Change-Id: I523637bbf601166f8a01ddf29a913e193d3fdc7a
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1514567
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/gk20a/gk20a.h

@@ -1134,6 +1134,7 @@ struct gk20a {
 	u32 disable_syncpoints;
 
 	bool support_pmu;
+	u32 bootstrap_owner;
 
 	bool is_virtual;