Note Ganesh vs. Graphite in RenderEngine's dumpsys section

Also remove empty lines between dumped Vulkan extensions, which improves
overall legibility of the section IMO.

Bug: b/293371537
Test: Manual validation of `dumpsys SurfaceFlinger` across backends
Flag: EXEMPT log only update
Change-Id: I25a7f09d2adbdc2c2859fac154a038485aea2484
diff --git a/libs/renderengine/skia/GraphiteVkRenderEngine.h b/libs/renderengine/skia/GraphiteVkRenderEngine.h
index cf24a3b..33a47f1 100644
--- a/libs/renderengine/skia/GraphiteVkRenderEngine.h
+++ b/libs/renderengine/skia/GraphiteVkRenderEngine.h
@@ -30,6 +30,7 @@
     std::unique_ptr<SkiaGpuContext> createContext(VulkanInterface& vulkanInterface) override;
     void waitFence(SkiaGpuContext* context, base::borrowed_fd fenceFd) override;
     base::unique_fd flushAndSubmit(SkiaGpuContext* context, sk_sp<SkSurface> dstSurface) override;
+    void appendBackendSpecificInfoToDump(std::string& result) override;
 
 private:
     GraphiteVkRenderEngine(const RenderEngineCreationArgs& args) : SkiaVkRenderEngine(args) {}