esp32: Enable machine.USBDevice to configure USB at runtime.

This adds support for `machine.USBDevice` to S2 and S3 boards.

Signed-off-by: Sebastian Romero <s.romero@arduino.cc>

ports/esp32/esp32_common.cmake

@@ -78,6 +78,7 @@ if(MICROPY_PY_TINYUSB)
         ${MICROPY_DIR}/shared/tinyusb/mp_usbd.c
         ${MICROPY_DIR}/shared/tinyusb/mp_usbd_cdc.c
         ${MICROPY_DIR}/shared/tinyusb/mp_usbd_descriptor.c
+        ${MICROPY_DIR}/shared/tinyusb/mp_usbd_runtime.c
     )
 
     list(APPEND MICROPY_INC_TINYUSB

ports/esp32/main.c

@@ -183,6 +183,10 @@ soft_reset_exit:
     mp_thread_deinit();
     #endif
 
+    #if MICROPY_HW_ENABLE_USB_RUNTIME_DEVICE
+    mp_usbd_deinit();
+    #endif
+
     gc_sweep_all();
 
     // Free any native code pointers that point to iRAM.

ports/esp32/mpconfigport.h

@@ -215,6 +215,10 @@
 #else
 #define MICROPY_HW_USB_VID  (CONFIG_TINYUSB_DESC_CUSTOM_VID)
 #endif
+
+#ifndef MICROPY_HW_ENABLE_USB_RUNTIME_DEVICE
+#define MICROPY_HW_ENABLE_USB_RUNTIME_DEVICE    (1) // Support machine.USBDevice
+#endif
 #endif
 
 #ifndef MICROPY_HW_USB_PID