[S] Change in coreboot[master]: soc/intel/elkhartlake: Make SATA speed limit configurable

[Werner Zeh (Code Review)]

Attention is currently required from: Paul Menzel, Mario Scheithauer, Lean Sheng Tan.

Werner Zeh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/71229 )

Change subject: soc/intel/elkhartlake: Make SATA speed limit configurable
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Patch Set 2:

(1 comment)

File src/soc/intel/elkhartlake/chip.h:

https://review.coreboot.org/c/coreboot/+/71229/comment/1394f89e_4a8c70dc 
PS2, Line 108: 	SATA_DEFAULT = 0,
             : 	SATA_GEN1,
             : 	SATA_GEN2
> Should you also list 'SATA_GEN3' for the completeness?

Since Gen 3 is the highest SATA speed grade it is not really a limit then. In addition, inside FSP, Gen 3 is treated the same way default is. Therefore, I have not added Gen 3 to this list.