[coreboot] [patch] correct off-by-one in pre-rev-F model F powernow code

[Peter Stuge]

Jonathan A. Kollasch wrote:
> Correct off-by-one problem in AMD pre-rev-F model-F PowerNow code.
> With this change the last P-state entry of the last CPU in the table
> is successfully conveyed into the SSDT.
> 
> Signed-off-by: Jonathan Kollasch <jakllsch at kollasch.net>

Acked-by: Peter Stuge <peter at stuge.se>