The guc_hw_reg_state array is not exported, so make it static.
Fixes the following sparse warning:
drivers/gpu/drm/i915/i915_gpu_error.c:692:3: warning: symbol 'guc_hw_reg_state' was not declared. Should it be static?

Fixes: ba391a102ec11 ("drm/i915/guc: Include the GuC registers in the error state")
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 7582ef34bf3f..303d8d9b7775 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -686,7 +686,7 @@ static void err_print_guc_ctb(struct drm_i915_error_state_buf *m,
 }
 
 /* This list includes registers that are useful in debugging GuC hangs. */
-const struct {
+static const struct {
 	u32 start;
 	u32 count;
 } guc_hw_reg_state[] = {
-- 
2.37.2.352.g3c44437643