[L] Change in coreboot[master]: intelblocks/vtd: Add VT-d block with DMA protection API

[Felix Held (Code Review)]

Attention is currently required from: Michał Żygowski, Angel Pons.

Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68449 )

Change subject: intelblocks/vtd: Add VT-d block with DMA protection API
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Patch Set 8:

(2 comments)

File src/soc/intel/common/block/vtd/vtd.c:

https://review.coreboot.org/c/coreboot/+/68449/comment/46f5d39d_c305d3f4 
PS8, Line 30: {
            : 	0x45, 0x16, 0xb6, 0x6f, 0x68, 0xf1, 0xbe, 0x46,
            : 	0x80, 0xec, 0xb5, 0x02, 0x38, 0x5e, 0xe7, 0xe7
            : };
was going to comment that i'd recommend using GUID_INIT here, but the GUID_INIT macro isn't used in soc/intel, so that wouldn't be consistent with the rest

https://review.coreboot.org/c/coreboot/+/68449/comment/1ee4c8f1_912ca36e 
PS8, Line 243: 	for (; hob->type != HOB_TYPE_END_OF_HOB_LIST;
             : 		hob = fsp_next_hob(hob)) {
             : 		if (hob->type != HOB_TYPE_RESOURCE_DESCRIPTOR)
             : 			continue;
             : 
             : 		res = fsp_hob_header_to_resource(hob);
fsp_hob_iterator_get_next_resource is helper function for this that avoids open coding the functionality