drm/amdgpu: update TCP_CHAN_STEER_1 golden value for aldebaran

The golden setting was changed recently. update to
the latest one

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>