New CMOS option sata_mode

[Josef Kellermann]

Attached patch implements a new CMOS option 'sata_mode'.
A new Kconfig option 'SATA_MODE' with default 'ide' is added to 
amd/sb600/Kconfig.
The handling of the CMOS option is placed in amd/sb600/sata.c and 
overrides the hardcoded 'ide' mode
in the following way:
if get_option(., "sata_mode") returns 0 use CMOS option
in case of -2 grab the Kconfig option CONFIG_SATA_MODE if exist
otherwise use the hardcoded mode.

Signed-off-by: Josef Kellermann

[Georgi, Patrick]

Hi Josef.

Thank you for the contribution.

Am Freitag, den 18.02.2011, 20:12 +0100 schrieb Josef Kellermann:
> Attached patch implements a new CMOS option 'sata_mode'.
> A new Kconfig option 'SATA_MODE' with default 'ide' is added to
> amd/sb600/Kconfig.

I changed the Kconfig handling a bit to not use a magic string, and to
handle the default value in Kconfig instead of doing it in code.
> Signed-off-by: Josef Kellermann

Acked-by: Patrick Georgi 
r6379

Patrick