modify code_style of CMakeList.txt to make ci_build_test_server able to work on gcc_4.8.2

lite/kernels/arm/CMakeLists.txt

+# NOTE we leave the add_kernel not protected by LITE_WITH_LIGHT_WEIGHT_FRAMEWORK so that all the kernels will be registered
+# to the model_optimize_tool.
+if(NOT (LITE_WITH_LIGHT_WEIGHT_FRAMEWORK AND LITE_WITH_ARM))
+    return()
+endif()
+
+message(STATUS "compile with lite ARM kernels")
 
 # 1. basic kernels for basic models
 # for conv op
@@ -93,13 +100,6 @@ add_kernel(fill_constant_compute_arm ARM basic SRCS fill_constant_compute.cc DEP
 add_kernel(lod_reset_compute_arm ARM extra SRCS lod_reset_compute.cc DEPS ${lite_kernel_deps} math_arm)
 add_kernel(is_empty_compute_arm ARM extra SRCS is_empty_compute.cc DEPS ${lite_kernel_deps} math_arm)
 
-# NOTE we leave the add_kernel not protected by LITE_WITH_LIGHT_WEIGHT_FRAMEWORK so that all the kernels will be registered
-# to the model_optimize_tool.
-if(NOT (LITE_WITH_LIGHT_WEIGHT_FRAMEWORK AND LITE_WITH_ARM))
-    return()
-endif()
-
-message(STATUS "compile with lite ARM kernels")
 
 lite_cc_test(test_scale_compute_arm SRCS scale_compute_test.cc DEPS scale_compute_arm)
 lite_cc_test(test_softmax_compute_arm SRCS softmax_compute_test.cc DEPS softmax_compute_arm)

lite/kernels/x86/CMakeLists.txt

+if(NOT LITE_WITH_X86)
+    return()
+endif()
+
 add_kernel(activation_compute_x86 X86 basic SRCS activation_compute.cc DEPS ${lite_kernel_deps} activation_ops math_function)
 # lite_cc_library(mean_compute_x86 SRCS mean_compute.cc DEPS ${lite_kernel_deps})
 # lite_cc_library(fill_constant_compute_x86 SRCS fill_constant_compute.cc DEPS ${lite_kernel_deps})
@@ -58,9 +62,6 @@ add_kernel(search_seq_fc_compute_x86 X86 extra SRCS search_seq_fc_compute.cc DEP
 add_kernel(sequence_topk_avg_pooling_compute_x86 X86 basic SRCS sequence_topk_avg_pooling_compute.cc DEPS ${lite_kernel_deps} sequence_topk_avg_pooling)
 add_kernel(search_fc_compute_x86 X86 basic SRCS search_fc_compute.cc DEPS ${lite_kernel_deps} search_fc)
 
-if(NOT LITE_WITH_X86)
-    return()
-endif()
 add_kernel(matmul_compute_x86 X86 basic SRCS matmul_compute.cc DEPS ${lite_kernel_deps} blas)
 
 lite_cc_test(test_conv2d_compute_x86 SRCS conv_compute_test.cc DEPS conv_compute_x86)