chore: fix the base usb configuration (jetkvm#610)

In reviewing the config.go settings for idProduct and bcdDevice are not formatted correctly. All examples on GitHub have 0x0104 and 0x0100 respectively. The idProduct value gets overwritten with valid values when you change the configuration (because they are correct in the options), but until you do the USB initialization will not be correct.

Author: IDisposable

internal/usbgadget/config.go

@@ -30,8 +30,8 @@ var defaultGadgetConfig = map[string]gadgetConfigItem{
 		attrs: gadgetAttributes{
 			"bcdUSB":    "0x0200", // USB 2.0
 			"idVendor":  "0x1d6b", // The Linux Foundation
-			"idProduct": "0104",   // Multifunction Composite Gadget
-			"bcdDevice": "0100",
+			"idProduct": "0x0104", // Multifunction Composite Gadget
+			"bcdDevice": "0x0100", // USB2
 		},
 		configAttrs: gadgetAttributes{
 			"MaxPower": "250", // in unit of 2mA