SL11_E0STAT
result = sl11read(sc, SL11_E0STAT);
r = slhci_read(ssc, SL11_E0STAT);
#define SL11_E0PID SL11_E0STAT /* Host PID, Device Endpoint (Write) */
#define SL11_E1STAT (SL11_E1BASE + SL11_E0STAT)