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

ggml/src/ggml-virtgpu/virtgpu-apir.h

@@ -0,0 +1,15 @@
+#include "backend/shared/apir_backend.h"
+#include "ggml-alloc.h"
+#include "ggml-impl.h"
+#include "ggml.h"
+#include "virtgpu-shm.h"
+#include "virtgpu-utils.h"
+
+struct apir_buffer_context_t {
+    apir_buffer_host_handle_t host_handle;
+
+    struct virtgpu_shmem           shmem;
+    apir_buffer_type_host_handle_t buft_host_handle;
+};
+
+#include "virtgpu-forward.gen.h"