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

[Karthik Ramasubramanian (Code Review)]

Karthik Ramasubramanian 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
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Patch Set 4:
> Patch Set 4:
>
> Aamir, have you had a chance to test on other chipsets besides TGL ?

I was able to boot up the JSL SoC with this change. I am yet to verify the mask contents in MSR.