aidl: Improve Effect VTS naming

Use uuid in hexadecimal format in testcase name.

Change-Id: Ib687b6617060e4400a767f23ca0b26cece4005f1
diff --git a/audio/aidl/vts/VtsHalDynamicsProcessingTest.cpp b/audio/aidl/vts/VtsHalDynamicsProcessingTest.cpp
index 033e3b5..5509c76 100644
--- a/audio/aidl/vts/VtsHalDynamicsProcessingTest.cpp
+++ b/audio/aidl/vts/VtsHalDynamicsProcessingTest.cpp
@@ -513,9 +513,7 @@
             auto descriptor = std::get<ENGINE_TEST_INSTANCE_NAME>(info.param).second;
             DynamicsProcessing::EngineArchitecture cfg;
             fillEngineArchConfig(cfg, info.param);
-            std::string name = "Implementor_" + descriptor.common.implementor + "_name_" +
-                               descriptor.common.name + "_UUID_" +
-                               descriptor.common.id.uuid.toString() + "_Cfg_" + cfg.toString();
+            std::string name = getPrefix(descriptor) + "_Cfg_" + cfg.toString();
             std::replace_if(
                     name.begin(), name.end(), [](const char c) { return !std::isalnum(c); }, '_');
             return name;