add test case for trtllm gen fused moe with kimi k2 problem sizes (#1768)

This is to add kimi k2 problem size to unit test.
num of experts is 384
top_k is 8

The support for kimi k2 moe is added w/ [PR
1696](#1696)

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Author: nv-yunzheq

tests/test_trtllm_gen_fused_moe.py

@@ -1853,6 +1853,23 @@ def cache_permute_indices():
 @pytest.mark.parametrize(
     "routing_config",
     [
+        pytest.param(
+            {
+                "num_experts": 384,
+                "top_k": 8,
+                "padding": 8,
+                "n_groups": 12,
+                "top_k_groups": 4,
+                "routed_scaling": 2.5,
+                "has_routing_bias": True,
+                "routing_method_type": RoutingMethodType.DeepSeekV3,
+                "compatible_moe_impls": [
+                    FP4Moe,
+                    FP8BlockScaleMoe,
+                ],
+            },
+            id="kimi_k2",
+        ),
         pytest.param(
             {
                 "num_experts": 256,