add flag_supported_class to usbh_devices

remove all ATTR_WEAK in init,open,isr,close driver functions of USBH-CLASS API
- prefer testing

tests/test/host/ehci/test_ehci_usbh_hcd_integration.c

@@ -42,6 +42,8 @@
 
 #include "hal.h"
 #include "mock_osal.h"
+#include "mock_hid_host.h"
+
 #include "hcd.h"
 #include "usbh_hcd.h"
 #include "usbh.h"