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/GaneshVkRenderEngine.cpp b/libs/renderengine/skia/GaneshVkRenderEngine.cpp
index a3a43e2..cc73f40 100644
--- a/libs/renderengine/skia/GaneshVkRenderEngine.cpp
+++ b/libs/renderengine/skia/GaneshVkRenderEngine.cpp
@@ -21,12 +21,15 @@
 
 #include <include/gpu/ganesh/vk/GrVkBackendSemaphore.h>
 
+#include <android-base/stringprintf.h>
 #include <common/trace.h>
 #include <log/log_main.h>
 #include <sync/sync.h>
 
 namespace android::renderengine::skia {
 
+using base::StringAppendF;
+
 std::unique_ptr<GaneshVkRenderEngine> GaneshVkRenderEngine::create(
         const RenderEngineCreationArgs& args) {
     std::unique_ptr<GaneshVkRenderEngine> engine(new GaneshVkRenderEngine(args));
@@ -111,4 +114,9 @@
     return res;
 }
 
+void GaneshVkRenderEngine::appendBackendSpecificInfoToDump(std::string& result) {
+    StringAppendF(&result, "\n ------------RE Vulkan (Ganesh)----------\n");
+    SkiaVkRenderEngine::appendBackendSpecificInfoToDump(result);
+}
+
 } // namespace android::renderengine::skia