The DFU uses the UART peripheral (with IRQ/ISR) for the debug output
console. Before starting the main application we should make sure
this configuration is reset to avoid interference (particularly the
IRQ/ISR).
This is not too important though since the main application
reconfigures the UART for console output.
Other peripheral could also be disabled (e.g. all other PIO used
by DFU), but most of them also get configured by the main application.
Change-Id: I8234d1b85938ad6393094c08183f613ad09ee01b
don't wait for space to be available in the buffer since since would
prevent from processing non-console (e.g. debug) more important data
Change-Id: Ia625b09eb30bb7b43edd3989f697d8ef33200f28
This way we can easily check with 'diff' for differences in our code and
Atmel softpack. Also, this layout is more suitable for building various
different firmware images (e.g. factory-test, dfu-loader, main
application) for a variety of different boards (simtrace, owhw, qmod).
