Enable tflm_benchmark on HiFi5 (#2400)

The tflm_benchmark utility runs fine on HiFi5. It is unclear why it was disabled.

BUG=none
diff --git a/tensorflow/lite/micro/tools/benchmarking/Makefile.inc b/tensorflow/lite/micro/tools/benchmarking/Makefile.inc
index 6189be4..036927e 100644
--- a/tensorflow/lite/micro/tools/benchmarking/Makefile.inc
+++ b/tensorflow/lite/micro/tools/benchmarking/Makefile.inc
@@ -9,8 +9,8 @@
 $(MICROLITE_BENCHMARK_ROOT_DIR)/metrics.h
 
 ifneq ($(TARGET),bluepill)
-ifneq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), hifi5 hifimini))
+ifneq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), hifimini))
     $(eval $(call microlite_test,tflm_benchmark,\
     $(GENERIC_BENCHMARK_SRCS),$(GENERIC_BENCHMARK_HDRS),))
 endif
-endif
\ No newline at end of file
+endif