amdgpu: fix 32-bit build
diff --git a/amdgpu/amdgpu_vm.c b/amdgpu/amdgpu_vm.c
index 8a9a0a1..304b423 100644
--- a/amdgpu/amdgpu_vm.c
+++ b/amdgpu/amdgpu_vm.c
@@ -21,6 +21,9 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 
 #include "amdgpu.h"
 #include "amdgpu_drm.h"