added RX Handling of packets and delivery...

Note, that there have been some "exceptions" on unload of module (it seems)...

Also there might be issues "lurking" wwhen running as SPI-bus speeds <1MHz

Signed-off-by: msperl <msperl@server>
added flag reset, to avoid unnecessary messages...

Signed-off-by: msperl <msperl@server>