RP2040 only support full speed. Advertising as USB2.0 triggers irrelevant negotiation.

Author: SmittyHalibut

Diff for: src/arduino/Adafruit_USBD_Device.cpp

@@ -176,7 +176,11 @@ bool Adafruit_USBD_Device::attach(void) { return tud_connect(); }
 void Adafruit_USBD_Device::clearConfiguration(void) {
   tusb_desc_device_t const desc_dev = {.bLength = sizeof(tusb_desc_device_t),
                                        .bDescriptorType = TUSB_DESC_DEVICE,
+#if CFG_TUSB_MCU==OPT_MCU_RP2040  // RP2040 only supports full speed
+                                       .bcdUSB = 0x0110,
+#else
                                        .bcdUSB = 0x0200,
+#endif
                                        .bDeviceClass = 0,
                                        .bDeviceSubClass = 0,
                                        .bDeviceProtocol = 0,