for intel xpu case, use MatMul8bitFp even not use ipex

Signed-off-by: Liu, Kaixuan <[email protected]>

Author: kaixuanliu

bitsandbytes/autograd/_functions.py

@@ -426,7 +426,7 @@ def matmul(
         state.threshold = threshold
     # MatMul8bitLt is slower because no fast kernel for quant/dequant 8bit in CPU/XPU
     if state.is_training:
-        if (A.device.type == "cpu" and ipex_cpu) or (A.device.type == "xpu" and ipex_xpu):
+        if (A.device.type == "cpu" and ipex_cpu) or (A.device.type == "xpu"):
             return MatMul8bitFp.apply(A, B, out, bias, state)
     return MatMul8bitLt.apply(A, B, out, bias, state)