[M] Change in coreboot[main]: soc/intel/mtl: Display Sign-of-Life message using FSP-M

[Pratikkumar V Prajapati (Code Review)]

Attention is currently required from: Anil Kumar K, Dinesh Gehlot, Eran Mitrani, Jérémy Compostella, Kapil Porwal, Martin L Roth, Martin Roth, Shelley Chen, Subrata Banik, Tarun.

Pratikkumar V Prajapati has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/78244?usp=email )

Change subject: soc/intel/mtl: Display Sign-of-Life message using FSP-M
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Patch Set 22: Code-Review+1