drm/amdgpu: cleanup vm_size handling

It's pointless to have the same value twice, just always use max_pfn.

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>
6 files changed