drm/i915: Remove success dmesg noise for intel_rotate_pages()

During selftesting intel_rotate_pages() is very, very verbose without
giving us any information. Suppress the noise.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171122145646.1859-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

drivers/gpu/drm/i915/i915_gem_gtt.c

@@ -3737,9 +3737,6 @@ intel_rotate_pages(struct intel_rotation_info *rot_info,
 				  rot_info->plane[i].stride, st, sg);
 	}
 
-	DRM_DEBUG_KMS("Created rotated page mapping for object size %zu (%ux%u tiles, %u pages)\n",
-		      obj->base.size, rot_info->plane[0].width, rot_info->plane[0].height, size);
-
 	kvfree(page_addr_list);
 
 	return st;
@@ -3749,8 +3746,8 @@ err_sg_alloc:
 err_st_alloc:
 	kvfree(page_addr_list);
 
-	DRM_DEBUG_KMS("Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n",
-		      obj->base.size, rot_info->plane[0].width, rot_info->plane[0].height, size);
+	DRM_DEBUG_DRIVER("Failed to create rotated mapping for object size %zu! (%ux%u tiles, %u pages)\n",
+			 obj->base.size, rot_info->plane[0].width, rot_info->plane[0].height, size);
 
 	return ERR_PTR(ret);
 }