include/linux/gk20a.h was missed while spliting the nvgpu driver off.
This patch imports it into the nvgpu repo.
bug 200187033
Change-Id: I0622091348c1b6e19f592a1807a19739dc1f9cd0
Signed-off-by: Alex Van Brunt <avanbrunt@nvidia.com>
Reviewed-on: http://git-master/r/1119271