Update python API of activation, topk, norm and rope and remove vllm dependency (#6614)

Co-authored-by: Wu, Chunyuan <chunyuan.wu@intel.com>
Co-authored-by: jianan-gu <jianan.gu@intel.com>
Co-authored-by: sdp <sdp@gnr799219.jf.intel.com>

python/sglang/srt/custom_op.py

@@ -1,9 +1,11 @@
 from torch import nn
 
-from sglang.srt.utils import is_cuda, is_hip
+from sglang.srt.utils import cpu_has_amx_support, is_cpu, is_cuda, is_hip
 
 _is_cuda = is_cuda()
 _is_hip = is_hip()
+_is_cpu = is_cpu()
+_is_cpu_amx_available = cpu_has_amx_support()
 
 
 class CustomOp(nn.Module):
@@ -75,5 +77,7 @@ class CustomOp(nn.Module):
             return self.forward_cuda
         elif _is_hip:
             return self.forward_hip
+        elif _is_cpu and _is_cpu_amx_available:
+            return self.forward_cpu
         else:
             return self.forward_native