Add test checks

Author: kaixih

tests/kernels/test_cutlass_mla_decode.py

@@ -5,6 +5,11 @@
 from torch import Tensor
 
 import vllm._custom_ops as ops
+from vllm.platforms import current_platform
+
+if not current_platform.has_device_capability(100):
+    pytest.skip(reason="Cutlass MLA Requires compute capability of 10 or above.",
+                allow_module_level=True)
 
 def ref_mla(
         out: Tensor,  # (bs, num_heads, v_head_dim)