Change in coreboot[master]: device/pnp,util/sconfig: introduce and use `MSC` resource type

[Nico Huber (Code Review)]

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/48925 )

Change subject: device/pnp,util/sconfig: introduce and use `MSC` resource type
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Patch Set 2:

Thank you for this! :)

Just wondering about the dt keyword. I would prefer something
like `reg8` that gives a hint about what it does and doesn't
need a coreboot scholar to teach new people about it.