refactor: merge MLU config API (#118)

lite/api/paddle_api.cc

@@ -238,13 +238,10 @@ void CxxConfig::set_mlu_core_number(int core_number) {
 void CxxConfig::set_mlu_input_layout(DataLayoutType layout) {
   mlu_input_layout_ = layout;
 }
-void CxxConfig::set_mlu_use_first_conv(bool use_first_conv) {
-  mlu_use_first_conv_ = use_first_conv;
-}
-void CxxConfig::set_mlu_first_conv_mean(const std::vector<float> &mean) {
+void CxxConfig::set_mlu_firstconv_param(const std::vector<float> &mean,
+                                        const std::vector<float> &std) {
+  mlu_use_first_conv_ = true;
   mlu_first_conv_mean_ = mean;
-}
-void CxxConfig::set_mlu_first_conv_std(const std::vector<float> &std) {
   mlu_first_conv_std_ = std;
 }
 lite_api::MLUCoreVersion CxxConfig::mlu_core_version() const {

lite/api/paddle_api.h

@@ -184,17 +184,16 @@ class LITE_API CxxConfig : public ConfigBase {
   void set_mlu_core_version(lite_api::MLUCoreVersion core_version);
   // set MLU core number, which is used when compiling MLU kernels
   void set_mlu_core_number(int core_number);
-  // set MLU input layout. User can specify layout of input data to be NHWC,
-  // default is NCHW
-  void set_mlu_input_layout(DataLayoutType layout);
   // whether use MLU's first conv kernel. First conv is a special kernel
   // provided by MLU, its input is uint8, and also needs two 3-dimentional
   // vectors which save all inputs' mean and std values
-  void set_mlu_use_first_conv(bool use_first_conv);
-  // set the 3-dimentional mean vector used by MLU's first conv
-  void set_mlu_first_conv_mean(const std::vector<float>& mean);
-  // set the 3-dimentional std vector used by MLU's first conv
-  void set_mlu_first_conv_std(const std::vector<float>& std);
+  // set the 3-dimentional mean vector and 3-dimentional std vector used by
+  // MLU's first conv
+  void set_mlu_firstconv_param(const std::vector<float>& mean,
+                               const std::vector<float>& std);
+  // set MLU input layout. User can specify layout of input data to be NHWC,
+  // default is NCHW
+  void set_mlu_input_layout(DataLayoutType layout);
 
   lite_api::MLUCoreVersion mlu_core_version() const;
   int mlu_core_number() const;