The current error detection only looks for a timeout.
This should be changed to also check scratch_reg1 for any errors
returned from RLCG.

v2: remove new error value
Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>