message: micro: organize Makefile test and kernel defs together
  In the micro Makefile, trivially move MICROLITE_BENCHMARK_SRCS
  def out from in between test and kernel defs in preperation for the
  next change, which will be more readable if the test and kernel
  defs are together.
diff: @@ -233,15 +233,15 @@ MICRO_LITE_EXAMPLE_TESTS := $(shell find tensorflow/lite/micro/examples/ -maxdep
  MICRO_LITE_EXAMPLE_TESTS += $(shell find tensorflow/lite/micro/examples/ -name Makefile_internal.inc)
  MICRO_LITE_BENCHMARKS := $(wildcard tensorflow/lite/micro/benchmarks/Makefile.inc)
  +# TODO(b/152645559): move all benchmarks to benchmarks directory.
  +MICROLITE_BENCHMARK_SRCS := \
  +$(wildcard tensorflow/lite/micro/benchmarks/*benchmark.cc)
  +
  MICROLITE_TEST_SRCS := \
  $(wildcard tensorflow/lite/micro/*test.cc) \
  $(wildcard tensorflow/lite/micro/kernels/*test.cc) \
  $(wildcard tensorflow/lite/micro/memory_planner/*test.cc)
  -# TODO(b/152645559): move all benchmarks to benchmarks directory.
  -MICROLITE_BENCHMARK_SRCS := \
  -$(wildcard tensorflow/lite/micro/benchmarks/*benchmark.cc)
  -
  MICROLITE_CC_KERNEL_SRCS := \
  $(wildcard tensorflow/lite/micro/kernels/*.cc)
  MICROLITE_CC_KERNEL_SRCS := $(filter-out $(MICROLITE_TEST_SRCS), $(MICROLITE_CC_KERNEL_SRCS))
  