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

ggml/src/ggml-virtgpu/include/apir_hw.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <stdint.h>
+
+struct virgl_renderer_capset_apir {
+   uint32_t apir_version;
+   uint32_t supports_blob_resources;
+   uint32_t reserved[4];           // For future expansion
+};