internal/graphicsdriver/playstation5: bug fix: compile failure

internal/graphicsdriver/playstation5/graphics_playstation5.cpp

@@ -0,0 +1,41 @@
+// Copyright 2023 The Ebitengine Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build playstation5
+
+// The actual implementation will be provided by -overlay.
+
+#include "graphics_playstation5.h"
+
+extern "C" int ebitengine_InitializeGraphics(void) {
+  return 0;
+}
+
+extern "C" int ebitengine_NewImage(int* image, int width, int height) {
+  return 0;
+}
+
+extern "C" int ebitengine_NewScreenFramebufferImage(int* image, int width, int height) {
+  return 0;
+}
+
+extern "C" void ebitengine_DisposeImage(int id) {
+}
+
+extern "C" int ebitengine_NewShader(int* shader, const char* source) {
+  return 0;
+}
+
+extern "C" void ebitengine_DisposeShader(int id) {
+}