add isr api for usbh_hcd

- void usbh_device_plugged_isr(uint8_t hostid, tusb_speed_t speed);
- void usbh_device_unplugged_isr(uint8_t hostid);

implement port_connect_status_isr

tests/test/support/ehci_controller.h

@@ -56,6 +56,7 @@
 #endif
 
 void ehci_controller_run(uint8_t hostid);
+void ehci_controller_device_plug(uint8_t hostid, tusb_speed_t speed);
 
 #ifdef __cplusplus
  }