add xpu_base_url parameter (#37712)

* 添加xpu指定url参数

cmake/external/xpu.cmake

@@ -34,8 +34,13 @@ ELSE ()
   SET(XPU_XCCL_DIR_NAME "xccl-bdcentos_x86_64")
 ENDIF()
 
-SET(XPU_BASE_URL_WITHOUT_DATE "https://baidu-kunlun-product.cdn.bcebos.com/KL-SDK/klsdk-dev")
-SET(XPU_BASE_URL "${XPU_BASE_URL_WITHOUT_DATE}/20211129")
+if(NOT DEFINED XPU_BASE_URL)
+  SET(XPU_BASE_URL_WITHOUT_DATE "https://baidu-kunlun-product.cdn.bcebos.com/KL-SDK/klsdk-dev")
+  SET(XPU_BASE_URL "${XPU_BASE_URL_WITHOUT_DATE}/20211129")
+else()
+  SET(XPU_BASE_URL "${XPU_BASE_URL}")
+endif()
+
 SET(XPU_XRE_URL  "${XPU_BASE_URL}/${XPU_XRE_DIR_NAME}.tar.gz" CACHE STRING "" FORCE)
 SET(XPU_XDNN_URL "${XPU_BASE_URL}/${XPU_XDNN_DIR_NAME}.tar.gz" CACHE STRING "" FORCE)
 SET(XPU_XCCL_URL "${XPU_BASE_URL_WITHOUT_DATE}/20210623/${XPU_XCCL_DIR_NAME}.tar.gz" CACHE STRING "" FORCE)