Use soong_ui.bash instead of the deprecated make wrapper

Test: ./art/test/testrunner/run_build_test_target.py -j50 art-gtest
Change-Id: I166d5c7b480289fbe25ba13d0f5e8593125d6160
diff --git a/test/testrunner/run_build_test_target.py b/test/testrunner/run_build_test_target.py
index f262059..14287b0 100755
--- a/test/testrunner/run_build_test_target.py
+++ b/test/testrunner/run_build_test_target.py
@@ -63,10 +63,9 @@
 os.environ.update(custom_env)
 
 if 'make' in target:
-  build_command = 'make'
+  build_command = 'build/soong/soong_ui.bash --make-mode'
   build_command += ' DX='
   build_command += ' -j' + str(n_threads)
-  build_command += ' -C ' + env.ANDROID_BUILD_TOP
   build_command += ' ' + target.get('make')
   if env.DIST_DIR:
     build_command += ' dist'