Support 'test_config' into soong modules

Test: make general-tests
Bug: 110982517
Change-Id: Ib2eab2653fdfce6f699b85c9fbc64558b6d40363
diff --git a/python/androidmk.go b/python/androidmk.go
index 365b422..20861cb 100644
--- a/python/androidmk.go
+++ b/python/androidmk.go
@@ -66,6 +66,11 @@
 			fmt.Fprintln(w, "LOCAL_COMPATIBILITY_SUITE :=",
 				strings.Join(p.binaryDecorator.binaryProperties.Test_suites, " "))
 		}
+		// If the test config has an explicit config specified use it.
+		if p.testProperties.Test_config != nil {
+			fmt.Fprintln(w, "LOCAL_TEST_CONFIG :=",
+				*p.testProperties.Test_config)
+		}
 	})
 	base.subAndroidMk(ret, p.binaryDecorator.pythonInstaller)
 }