refine fc op use cpu only

paddle/fluid/operators/CMakeLists.txt

@@ -158,11 +158,6 @@ function(op_library TARGET)
         file(APPEND ${pybind_file} "USE_OP_DEVICE_KERNEL(relu, MKLDNN);\n")
       else()
         file(APPEND ${pybind_file} "USE_OP_DEVICE_KERNEL(${TARGET}, MKLDNN);\n")
-        # HACK: fc only have cpu kernel
-        if (${MKLDNN_FILE} STREQUAL "fc_mkldnn_op")
-            file(APPEND ${pybind_file} "USE_CPU_ONLY_OP(${TARGET});\n")
-            set(pybind_flag 1)
-        endif()
       endif()
     endif()
 
@@ -175,6 +170,9 @@ function(op_library TARGET)
         file(APPEND ${pybind_file} "USE_OP(fake_dequantize_max_abs);\n")
       elseif(${TARGET} STREQUAL "tensorrt_engine_op")
           message(STATUS "Pybind skips [tensorrt_engine_op], for this OP is only used in inference")
+      elseif(${TARGET} STREQUAL "fc")
+        # HACK: fc only have mkldnn and cpu, which would mismatch the cpu only condition
+        file(APPEND ${pybind_file} "USE_CPU_ONLY_OP(${TARGET});\n")
       else()
         file(APPEND ${pybind_file} "USE_OP(${TARGET});\n")
       endif()