drm/amdgpu: move size calculations to the front of the file again

amdgpu_vm_bo_* functions should come much later.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed