drm/tegra: Atomic conversion, phase 3, step 2

Replace drm_crtc_helper_set_config() by drm_atomic_helper_set_config().
All drivers have now been converted to use ->atomic_check() to set the
atomic state, therefore the atomic mode setting helpers can be used.
Signed-off-by: NThierry Reding <treding@nvidia.com>

drivers/gpu/drm/tegra/dc.c

@@ -1057,7 +1057,7 @@ static void tegra_crtc_atomic_destroy_state(struct drm_crtc *crtc,
 
 static const struct drm_crtc_funcs tegra_crtc_funcs = {
 	.page_flip = tegra_dc_page_flip,
-	.set_config = drm_crtc_helper_set_config,
+	.set_config = drm_atomic_helper_set_config,
 	.destroy = tegra_dc_destroy,
 	.reset = tegra_crtc_reset,
 	.atomic_duplicate_state = tegra_crtc_atomic_duplicate_state,