drm/amdgpu: Program gds backup address as zero if no gds allocated

drm/amdgpu: Program gds backup address as zero if no gds allocated

commit 94034b306ddde4a4a9c1a597ae7f61f04b710dc7 upstream.

It is firmware requirement to set gds_backup_addrlo and gds_backup_addrhi
of DE meta both zero if no gds partition is allocated for the frame.

Signed-off-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.3.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>