Change in coreboot[master]: soc/intel/common/cpu: Update COS mask calculation for NEM enhanced mode

[Tim Wawrzynczak (Code Review)]

Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/43494 )

Change subject: soc/intel/common/cpu: Update COS mask calculation for NEM enhanced mode
......................................................................

Patch Set 4:
> Patch Set 4:
> > Patch Set 4:
> > > Patch Set 4:
> > > > Patch Set 4:
> > > > > Patch Set 4:
> > > > > > Patch Set 4:
> > > > > >
> > > > > > FYI I was able to boot my Volteer with this patch & adding COS_MAPPED_TO_MSB and USE_CAR_NEM_ENHANCED_V1 to the Kconfig.
> > > > >
> > > > > Thanks for checking Tim :-)
> > > > > TGL can select USE_CAR_NEM_ENHANCED_V2.
> > > >
> > > > Oops, yeah that was a typo in Gerrit not in the code, I did use V2 in my Kconfig 😄
> > >
> > > Hi Tim, did you use Volteer QS / Volteer EVT? Because on Volteer ES2, we would see that these 2 MSRs are not accessible.
> >
> > I just thought about that, no it was on proto2. I just received my other board, I will try it out soon.
>
> Ok. Thanks the info.

I can confirm my volteer2 (should be QS) boots with this patch and the 2 Kconfigs selected. I am not aware of any other mechanism to verify the CQOS is set up correctly