[SeaBIOS] Open Firmware path on boot selection screen.

[Weinz Christian]

>> Latest seabios (aka git master, 1.7.3 isn't new enough) can append 
>>the
>> seabios log to the coreboot logbuffer.  So you can use "cbmem -c" to
>> read the logs once the system is up'n'running and find the strings 
>>there.

Then I suggest adding that information to the wiki:
http://www.coreboot.org/SeaBIOS#Configuring_boot_order
when that feature is in the stable release.

Thank you.