added a dummy config for reduction kernels

Author: iupaikov-amd

torch/_inductor/runtime/triton_heuristics.py

@@ -2558,7 +2558,15 @@ def make_config(x, r, num_warps=None, num_stages=1, register_intensive=False):
 
     # Additional reduction configs appended for ROCm builds
     if torch.version.hip:
-        pass
+        # New config
+        result_configs.append(triton_config_reduction(
+            size_hints,
+            8192,
+            2048,
+            num_warps=4,
+            num_stages=1,
+            waves_per_eu=2
+        ))
 
     return result_configs