[310p] Add a PyTorch implementation of the GDN gating operator on 310P (#7430)

### What this PR does / why we need it?
RFC #7394
Add a PyTorch implementation of the GDN gating operator on 310P.

### Does this PR introduce _any_ user-facing change?
NO

### How was this patch tested?
UT

- vLLM version: v0.17.0
- vLLM main:
4497431df6

Signed-off-by: Tflowers-0129 <2906339855@qq.com>

tests/e2e/nightly/single_node/ops/singlecard_ops/triton/test_fused_gdn_gating.py

@@ -0,0 +1,51 @@
+import torch
+
+from vllm_ascend._310p.ops.fla.fused_gdn_gating import fused_gdn_gating_pytorch
+from vllm_ascend.ops.triton.fused_gdn_gating import fused_gdn_gating_patch
+from vllm_ascend.ops.triton.triton_utils import init_device_properties_triton
+
+
+def test_fused_gdn_gating_310p_parity_precision():
+    init_device_properties_triton()
+    torch.manual_seed(0)
+    device = "npu"
+
+    num_tokens = 37
+    num_heads = 8
+
+    A_log = torch.randn(num_heads, dtype=torch.float16, device=device)
+    dt_bias = torch.randn(num_heads, dtype=torch.float16, device=device)
+    a = torch.randn(num_tokens, num_heads, dtype=torch.float16, device=device)
+    b = torch.randn(num_tokens, num_heads, dtype=torch.float16, device=device)
+
+    triton_g, triton_beta = fused_gdn_gating_patch(
+        A_log=A_log,
+        a=a,
+        b=b,
+        dt_bias=dt_bias,
+        beta=1.0,
+        threshold=20.0,
+    )
+    ref_g, ref_beta = fused_gdn_gating_pytorch(
+        A_log=A_log,
+        a=a,
+        b=b,
+        dt_bias=dt_bias,
+        beta=1.0,
+        threshold=20.0,
+    )
+
+    torch.testing.assert_close(
+        triton_g.to(torch.float32).cpu(),
+        ref_g.to(torch.float32).cpu(),
+        rtol=1e-2,
+        atol=1e-2,
+        equal_nan=True,
+    )
+    torch.testing.assert_close(
+        triton_beta.to(torch.float32).cpu(),
+        ref_beta.to(torch.float32).cpu(),
+        rtol=1e-2,
+        atol=1e-2,
+        equal_nan=True,
+    )