drm/amdgpu: add num_level to the VM manager

Needs to be filled with handling.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index 69535d9..e56df94 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -154,6 +154,7 @@ struct amdgpu_vm_manager {
 	unsigned				seqno[AMDGPU_MAX_RINGS];
 
 	uint32_t				max_pfn;
+	uint32_t				num_level;
 	/* vram base address for page table entry  */
 	u64					vram_base_offset;
 	/* is vm enabled? */