Stub implementation for USB audio HAL.

Bug: 266216550
Test: atest VtsHalAudioCoreTargetTest
Change-Id: Ida4b3dbdb684dfc880a907651ae0fc398addbffc
diff --git a/audio/aidl/default/Module.cpp b/audio/aidl/default/Module.cpp
index 7e829e3..82d1ef8 100644
--- a/audio/aidl/default/Module.cpp
+++ b/audio/aidl/default/Module.cpp
@@ -259,6 +259,8 @@
             case Type::R_SUBMIX:
                 mConfig = std::move(internal::getRSubmixConfiguration());
                 break;
+            case Type::USB:
+                mConfig = std::move(internal::getUsbConfiguration());
         }
     }
     return *mConfig;