firmware, host: Changed vendor and product id

The code used a vendor and product id taken from Atmel example code.
Now it is changed to the vendor and product id, which was also previously
used in the original SIMtrace code.

firmware/src_simtrace/usb.c

@@ -564,7 +564,7 @@ const USBDeviceDescriptor deviceDescriptor = {
     0xff,
 //    CDCDeviceDescriptor_PROTOCOL,
     BOARD_USB_ENDPOINTS_MAXPACKETSIZE(0),
-    ATMEL_VENDOR_ID,
+    SIMTRACE_VENDOR_ID,
     SIMTRACE_PRODUCT_ID,
     1, /* Release number */
     0, /* No string descriptor for manufacturer */