Add reset_ras_error_count callback for mmhub
v1_8. It will be used to reset mmhub ras error
count.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>