ggml: new backend for Virglrenderer API Remoting acceleration (v2) (#18718)

ggml/include/ggml-virtgpu.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "ggml.h"
+#include "ggml-backend.h"
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+#define GGML_REMOTING_FRONTEND_NAME "RemotingFrontend"
+
+GGML_BACKEND_API ggml_backend_reg_t ggml_backend_virtgpu_reg();
+
+#ifdef  __cplusplus
+}
+#endif