[LinuxBIOS] [PATCH] SPD functions refactoring

[Uwe Hermann]

First off: please do _not_ apply this patch. Thanks ;-)

This moves all/most generic SPD-only functions (which are not
chipset-specific) into an extra spd.c file. The second step would be to
merge all near-identical functions into one generic version which all
chipsets can use.

This is _not_ a working patch, yet, it's merely here to illustrate what
I'm working on.

I repeat:
 - This should _not_ be committed in this form.
 - It probably doesn't compile and breaks a ton of boards
 - It's not yet abuild-tested
 - It's not tested on real hardware
 - It's incomplete

Preliminary comments are welcome, though...

Uwe.