cpsw_sl_get
port->slave.mac_sl = cpsw_sl_get("am65", dev, port->port_base);
slave->mac_sl = cpsw_sl_get("cpsw", dev, regs + sliver_offset);
EXPORT_SYMBOL_GPL(cpsw_sl_get);
struct cpsw_sl *cpsw_sl_get(const char *device_id, struct device *dev,