Depending on which features (and thus USB configurations) are included
in the firmware, we need to re-define the ordering of the configuration
numbers, as the Atmel USBD driver simply assumes that configurations are
numbered 1..N without any gaps in the sequence.
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.
* Sniffer uses phone endpoints for communication and the ringbuffer
routines the phone communication uses
* Most times the Usart1 interrupt is not triggered, and therefore
no values are recorded
* Implemented configure, init, exit functions:
When a configuration is changed, interrupts for reset pins
should be disabled
* Moved variables shared between code files to simtrace.h
