DT passes the exact GART register ranges without any overlapping with
MC register ranges. GART register offset needs to be adjusted by one
passed by DT correctly.
Signed-off-by: NHiroshi DOYU <hdoyu@nvidia.com>
Acked-by: NStephen Warren <swarren@wwwdotorg.org>
Signed-off-by: NJoerg Roedel <joerg.roedel@amd.com>