build/make: auto generate Test config file for Google Benchmark Test

BUG: 74844131
Test: cd bionic/; mm (auto generating the test config in out/)
      atest bionic-benchmarks (full testing in atest)
Change-Id: I0497eed876640893d0b82d4cde384d3608cf4875
diff --git a/core/config.mk b/core/config.mk
index 7a42552..94642cd 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -152,6 +152,7 @@
 BUILD_TARGET_TEST_CONFIG := $(BUILD_SYSTEM)/target_test_config.mk
 
 INSTRUMENTATION_TEST_CONFIG_TEMPLATE := $(BUILD_SYSTEM)/instrumentation_test_config_template.xml
+NATIVE_BENCHMARK_TEST_CONFIG_TEMPLATE := $(BUILD_SYSTEM)/native_benchmark_test_config_template.xml
 NATIVE_TEST_CONFIG_TEMPLATE := $(BUILD_SYSTEM)/native_test_config_template.xml
 EMPTY_TEST_CONFIG := $(BUILD_SYSTEM)/empty_test_config.xml