gpu: nvgpu: make the local function static

Fixed the following sparse warnings by making below APIs static:
- gk20a.c: warning: symbol 'gk20a_pm_restore_debug_setting' was not declared.
                    Should it be static?
- gr_gk20a.c: warning: symbol 'gr_gk20a_rop_l2_en_mask' was not declared.
	               Should it be static?
- gr_gm20b.c: warning: symbol 'gr_gm20b_rop_l2_en_mask' was not declared.
		       Should it be static?

Bug 200067946

Change-Id: I334893bb6614171bff835d270716a7dd262c9ba7
Signed-off-by: Amit Sharma (SW-TEGRA) <amisharma@nvidia.com>
Reviewed-on: http://git-master/r/718756
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>

0 files changed, 0 insertions, 0 deletions