[coreboot-gerrit] Change in coreboot[master]: soc/intel/common/../car: Calculate SF Mask#1 based on MSR 0xc87

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Subrata Banik, Nick Vaccaro, EricR Lai.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51374 )

Change subject: soc/intel/common/../car: Calculate SF Mask#1 based on MSR 0xc87
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Patch Set 5:

(2 comments)

File src/soc/intel/common/block/cpu/car/cache_as_ram.S:

https://review.coreboot.org/c/coreboot/+/51374/comment/62e7d6bb_9fe7cbde 
PS5, Line 520: 	mov	%ecx, %edi
suggestion:
`/* save number of ways to edi because rdmsr has to use ecx */`

https://review.coreboot.org/c/coreboot/+/51374/comment/12fe02ae_4df7eb7a 
PS5, Line 524: (1 << data_ways)
I don't see this calculation anywhere... below I see 
`SF_MASK_1 = (1 << (IA32_SF_QOS_INFO & 0x3f)) - 1`
or
`SF_MASK_1 = (1 << SFWayCnt) - 1)`