ESP: fix ICCS command

Index: hw/esp.c
===================================================================
@@ -517,6 +517,8 @@
         case CMD_ICCS:
             DPRINTF("Initiator Command Complete Sequence (%2.2x)\n", val);
             write_response(s);
+            s->rregs[ESP_RINTR] = INTR_FC;
+            s->rregs[ESP_RSTAT] |= STAT_MI;
             break;
         case CMD_MSGACC:
             DPRINTF("Message Accepted (%2.2x)\n", val);