[coreboot] Extension to inteltool and a request

[Keith Hui]

Hi all,

This patch extends inteltool's MSR dumping to all Slot 1 Intel CPUs.

I made this an attempt to gather some information for an updated L2
patch, so I have a request to all,

Can anyone with a Slot 1 CPU apply the attached patch, compile
inteltool, and post the output together with some information on your
CPU?

Thanks.

Patch is Signed-off-by: Keith Hui 
if it's useful for the future and worth committing.