Make GenericPlatformImpl_Fuchsia a friend of ConfigurationManager

Make GenericPlatformImpl_Fuchsia a friend of ConfigurationManager,
since the PlatformImpl needs to initialize ConfigurationManager.

Bug: 48253
Test: Verified invoking ConfigurationManager APIs.

Change-Id: I25eca2052687f0b3f30e76395c636fb82c3d8f3e
diff --git a/src/adaptations/device-layer/include/Weave/DeviceLayer/ConfigurationManager.h b/src/adaptations/device-layer/include/Weave/DeviceLayer/ConfigurationManager.h
index c8f6194..8e63e81 100644
--- a/src/adaptations/device-layer/include/Weave/DeviceLayer/ConfigurationManager.h
+++ b/src/adaptations/device-layer/include/Weave/DeviceLayer/ConfigurationManager.h
@@ -138,6 +138,7 @@
 
     friend class ::nl::Weave::DeviceLayer::PlatformManagerImpl;
     template<class> friend class ::nl::Weave::DeviceLayer::Internal::GenericPlatformManagerImpl;
+    template<class> friend class ::nl::Weave::DeviceLayer::Internal::GenericPlatformManagerImpl_Fuchsia;
     friend class ::nl::Weave::DeviceLayer::TraitManager;
     friend class ::nl::Weave::DeviceLayer::Internal::DeviceControlServer;
     // Parentheses used to fix clang parsing issue with these declarations