Adjust vram base offset for XGMI mapping when update the PT entry so
the address will fall into correct XGMI aperture for peer device
Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>