Change in coreboot[master]: soc/amd/common/apob: Add support for asynchronously reading APOB_NV

[Raul Rangel (Code Review)]

Attention is currently required from: Jason Glenesk, Marshall Dawson, Julius Werner, Felix Held.
Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/56232 )

Change subject: soc/amd/common/apob: Add support for asynchronously reading APOB_NV
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Patch Set 7:

(1 comment)

File src/soc/amd/common/block/apob/apob_cache.c:

https://review.coreboot.org/c/coreboot/+/56232/comment/226394b4_df2b5250 
PS6, Line 71: 	if  (fmap_locate_area(DEFAULT_MRC_CACHE, r) < 0) {
> I would say just use the RW rdev right away in that case, or just look up the FMAP section again. […]

The RW boot device doesn't have the SPI DMA functionality. I can throw up a CL to update get_apob_from_nv_region.