drm/radeon/kms: implement gpu lockup check for evergreen

Now that soft reset works, we can add this.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 431d418..d2697f8 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1031,6 +1031,7 @@
 	unsigned tiling_npipes;
 	unsigned tiling_group_size;
 	unsigned tile_config;
+	struct r100_gpu_lockup	lockup;
 };
 
 union radeon_asic_config {