README file for seabios/debian/optionrom

The files in this directory are taken from qemu sources,
git commits below.  They're from qemu and used by qemu,
but are packaged with seabios, because the files must
be built on x86 arch (just like seabios itself) but are
Arch: all.  Seabios package itself is Arch: all, so it
has no issues building some more stuff with it.  But
qemu is Arch: any, but the only architecture where these
files can be built is x86.  So we just move them into
seabios package and build here.

The files taken from qemu:

include/hw/nvram/fw_cfg.h 35c12e60c840bc4840cbbe3f6ca514a53b2e36bc  Wed Jul 24 18:56:05 2013 +0300
pc-bios/optionrom/optionrom.h 209ca750b9e1854fa8f63fae16aef15becb1cdea Feb 17 18:31:21 2012 +0100
 (this one inludes a trivial change for #include'ing fw_cfg.h)
scripts/signrom.py 0d6b9cc7420dd2d531b48508f0d4083d1c6a632a Jan 27 19:44:53 2012 +0100
pc-bios/optionrom/extboot.S 211721f31c62cc889369da79d75c38f7297b6465 Feb 18 17:13:30 2010 +0100
 (removed upstream)
pc-bios/optionrom/linuxboot.S 75b9f69057b166876a0c33d5fd86aa59ccfd3812 Jan 31 15:11:01 2011 +0200
pc-bios/optionrom/multiboot.S 26a8ec07616df8eeb7ae5e76a4eade6809c426e3 Sun Jun 23 22:07:45 2013 +0200
pc-bios/optionrom/kvmvapic.S 501981126d0aaaa72f720edeee892b830cbe3e55 Feb 17 18:31:22 2012 +0100

and Makefile to build it all.
