Change in coreboot[master]: soc/intel/skylake: Drop unnecessary `ignore_vtd` option

[Angel Pons (Code Review)]

Attention is currently required from: Michał Żygowski, Michael Niewöhner, Patrick Rudolph, Piotr Król.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52101 )

Change subject: soc/intel/skylake: Drop unnecessary `ignore_vtd` option
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Patch Set 1:

(1 comment)

File src/soc/intel/skylake/systemagent.c:

https://review.coreboot.org/c/coreboot/+/52101/comment/939eded6_f91eab13 
PS1, Line 42: 	const struct soc_intel_skylake_config *const config = config_of(dev);
> orphaned

woups