[coreboot] PNP logical device handling

[Rudolf Marek]

Hi all,

I have some problem with overwriting of PNP register 0x30.

Normally the logical device is enabled when 0x1 is written to register 0x30. 
This is what pnp_enable_device will do, but Winbond decided that they will abuse 
this register and put some extra enable bit in it. So, if I have in my lb conf 
that the logical device is disabled it will overwrite whole register with 0
And  if enabled, then with one. I need to leave there 0x9 (yeah it is 
coincidence that it is also logical number) For further details please check 
W83627EHF/EHG datasheet - logical device 9 register 0x30

http://www.winbond.com/NR/rdonlyres/A6A258F0-F0C9-4F97-81C0-C4D29E7E943E/0/W83627EHF.pdf

The logical device for SPI flash has only bit 1 for enable/disable. Bit 0 is 
reserved.

Question is how to solve that? Would help to ommit 2e.9 off/on in Config.lb? And 
enable this manually in sio_init in MB specific setup?

Thanks,

Rudolf