In ras poison mode, page retirement will be handled by the irq handler of the
module which consumes corrupted data.

v2: rename ras_process_cb to ras_poison_consumption_handler.
    move the handler's implementation from ASIC specific file to common
file.

v3: call gpu reset for xGMI connected mode.
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>